Bundle Inventory Management and What’s Actually Required to Fulfill Them Correctly
Nothing exposes weak operational foundations faster than bundled products.
Tina Donati
Dec 09, 2025 · 10 min
When you understand the three types of prices—and how to use them—you’ll stop guessing.
Tina Donati
Dec 09, 2025 · 10 min
Tina Donati is the Head of Marketing at Simple Bundles and has spent the past 7+ years helping Shopify brands streamline their tech stack and unlock growth through smarter product bundling, better UX, and cleaner ops.
Most brands treat pricing like math. Pick a number. Tag the product. Run a sale when things slow down.
But pricing isn’t math.It’s psychology.
Behind every purchase, customers aren’t just reacting to the number you choose—they’re comparing it against two invisible numbers they hold in their minds. Three prices shape every buying decision, not one:
When these three prices align, customers convert easily. When they don’t, even aggressive discount pricing or fancy merchandising won’t save the sale.
Understanding these price types—and how to influence them—helps brands make smarter pricing decisions, protect profit margins, and improve profitability.
Let’s dig in.
Every shopper carries around an internal pricing system, even if they’ve never articulated it. It’s subconscious, emotional, and shaped by everything from past experiences to competitor comparisons to how much sleep they got last night.
Here’s how the three-price model works:
Your goal isn’t just setting prices. It’s crafting a price that aligns with customer psychology, market expectations, and consumer perception while preserving profit margins.
Let’s break down each price and explore the psychology behind it.
A reference price is the mental benchmark shoppers carry around with them, usually without realizing it. It guides almost every pricing judgment they make.
Some items come with a crystal-clear reference price. If you buy the same $3 coffee every morning, you know exactly what the price of a product should be. If it goes up by 75¢, you feel it immediately.
But other categories? The reference price is basically a guess.
Walk into a grocery store and look at clementines. You might know that they’re “usually around a dollar-ish per pound,” but that’s about it. If the price jumps to $2.20, it feels wrong—even if you can’t articulate why. If it drops to a lower price, suddenly it feels like a great find.
Reference prices don’t have to be accurate. They just have to exist. And once they do, they become the compass customers use to navigate value.
This anchors their sense of perceived value and influences whether a price feels like lower prices or higher prices.
For example, buying your normal $3 coffee at a specialty café can feel outrageous at $8—even though the café isn’t pricing “wrong,” your reference price just doesn’t apply there.
You can’t erase a shopper’s internal benchmark, but you can guide it using a few psychological cues:
Reference prices are powerful but fragile. Which means when you frame them well, you can shift perception instantly.
If the reference price is the shopper’s expectation, the reservation price is the shopper’s ceiling.It’s the line they mentally draw between “worth it” and “nope.”
But here’s the twist: reservation price isn’t rational. It changes based on:
This is where price-sensitive customers reveal themselves.
Someone who wouldn’t pay $9 for a smoothie on a normal day will happily pay $14 for one at the airport when they’re tired, pressed for time, or craving something fresh.
It’s not just about cost.It’s about utility: “Is this worth it to me right now?”
All of this raises the customer's willingness to pay without altering production costs. A person’s willingness to pay isn’t fixed—it moves with their emotions.
You can’t directly raise what someone is willing to pay, but you can elevate perceived value:
The reservation price is emotional. Influence the emotion, and you influence the ceiling.
The asking price is the number you attach to your product. It’s what you enter in Shopify. It’s the label on the tag. It’s the official cost customers must decide to accept or decline.
Most brands treat this as the only price that matters. But the asking price is actually a message—one that carries more weight than brands realize.
The moment you publish a price, you’re telling customers:
A low asking price signals affordability, but also lower quality.A high asking price signals premium, but also higher expectations.A constantly discounted asking price signals desperation, not generosity.
But when your asking price aligns with reference and reservation prices?Everything clicks.
Perceived fairness goes up.Purchase anxiety goes down.Conversion rate improves without relying on discounts.
Most pricing articles throw a list of strategies at you and call it a day. But real retail pricing isn’t just “cost-plus” or “premium pricing.” It’s a choreography of value perception, psychology, competition, and customer behavior.
Here’s what most brands misunderstand about common pricing strategies, and how they fit into a holistic pricing method.
The classic equation: Cost + markup = price.
Simple, but risky, because customer willingness to pay rarely aligns with cost. Still useful in cost-driven categories and traditional cost-based or keystone pricing systems.
It’s predictable, logical, and easy to scale. But it also ignores reality. What things cost and what customers are willing to pay are rarely the same number. Cost-plus works best in commodity categories, where competition is high and differentiation is low.
Retailers often anchor their price to what competitors are charging. But here’s the catch: if you’re always pricing in relation to others, you’re letting them define your value for you. Great for parity-driven categories, limiting for brands with strong positioning. This helps maintain market share in a competitive pricing strategy.
Price based on what customers believe the product is worth, not what it costs you to make. Apple does this. Lululemon does this. Most premium brands do this—because it aligns pricing with perception, not materials.
Charm pricing ($9.99), prestige pricing ($100 instead of $99), anchoring with a “compare at” price—these tactics work because our brains take shortcuts. One number can change the entire story.
A strategic way to increase AOV without lowering individual product prices.
This is where bundling becomes strategy, not discounting. By grouping complementary products together, retailers increase perceived value, simplify decisions, and gently push AOV upward.
Used to drive sales volume by offering a key item below margin to attract customers.
Retailers intentionally lower the price of a popular product to pull people in—think Costco’s $4.99 rotisserie chicken. The goal isn’t margin. It’s momentum.
Offering lower prices to quickly acquire new customers and grow market share.
Launching at high prices for early adopters, then lowering over time.
Instead of running promos, EDLP brands commit to consistent low prices year-round. It builds trust—but requires razor-thin efficiency and a clear value promise.
The opposite of EDLP: high regular prices paired with predictable markdown cycles (think Macy’s or Kohl’s). Customers love the thrill; brands rely on the margin mix.
Prices adjust in real time based on demand, inventory, or seasonality. Airlines do it. Amazon does it. Many modern retailers are quietly adopting it too.
These strategies aren’t mutually exclusive. Most retailers use a blend—sometimes all of them—across different categories. The key is matching strategy to customer expectation.
And that’s where the three-price model becomes the secret advantage.
When all three prices—reference, reservation, and asking—work together, customers feel like they're making a smart, fair, satisfying choice.
But when they’re misaligned?
That’s why the smartest brands don’t just set prices.They engineer them.
They intentionally shape reference prices.They elevate reservation prices with powerful value propositions.And they set asking prices that reinforce the brand identity they want to build.
Pricing becomes a story that leads to the sale before the customer ever sees the checkout page.
You can turn this framework into a practical audit. Look at your product line and ask:
If these three aren’t aligned, your pricing isn’t optimized, no matter how strong your product is.
Understanding pricing psychology is powerful, but retailers don’t win on theory—they win on execution. Pricing only becomes a strategy when it’s supported by processes, testing, and systems that help you maintain consistency and react intelligently to customer behavior.
Here are the tactical levers retailers actually use to bring pricing strategy to life.
Most retailers discount reactively: slow sales → panic → markdown.But high-performing brands create pricing playbooks—living documents that define:
This is the difference between training customers to expect discounts vs. training customers to trust your pricing.
A pricing playbook gives your team confidence, protects margins, and keeps promotional chaos to a minimum.
You can guess what customers will pay, or you can test it.
Smart retailers experiment with:
What you learn will surprise you.
Sometimes a tiny price increase boosts conversion because it signals quality.Sometimes removing a discount banner increases AOV because customers stop bargain-hunting. Sometimes a $5 bundle discount outperforms a 20% off coupon by a mile.
Testing removes guesswork.Testing protects margin.Testing makes pricing strategic.
Inventory should guide pricing, not pressure it.
Here’s what smart retailers do:
Scarcity allows for premium pricing, reduced discounting, or controlled promotions.
Move product through:
This moves stock while preserving price integrity.
When seasonal contraction is expected—not surprising—you avoid panic discounting entirely.
Retailers who plan inventory + pricing together win on both fronts.
You can increase perceived value without touching the price tag.
Simple merchandising improvements shift reference and reservation prices:
This elevates value perception, raising the reservation price and reducing reliance on heavy discounts.
Price ladders create a natural journey for shoppers:
When done well, the mid-tier product becomes the “obvious choice,” while the premium option anchors the reference price higher.
This strategy is used everywhere—Apple, Dyson, Sephora, Peloton—because it makes pricing feel intuitive instead of arbitrary.
Retailers increasingly use segmentation to deliver targeted pricing:
Pricing personalization lets you reward the right people without sacrificing margin to the masses.
Retail pricing needs infrastructure.
You can plug in:
Technology makes pricing both scalable and disciplined—two things most retailers desperately need.
Customers learn your patterns.If you run sales randomly, they buy randomly.If you run sales predictably, they trust you and plan around you.
Great retailers:
A promotions calendar is margin protection disguised as marketing.
Remember: every discount changes how customers interpret your brand.
So every discount should answer:
When a discount has a reason, customers buy.When it doesn’t, customers wait for the next one.
Most pricing mistakes come from only optimizing the asking price. But the real work happens in shaping expectations (reference price) and perceived value (reservation price).
When you understand the three types of prices—and how to use them—you’ll stop guessing. You’ll stop discounting out of insecurity. You’ll start pricing with confidence and intention.
And suddenly, your prices will feel right to the people who matter most: your customers.