A Shopify store with 200 products will have 15-30 of them out of stock at any given time. Each of those product pages still gets traffic — from old ads, organic search, social links, bookmarked pages. And every visitor who lands on a "Sold Out" button does exactly one thing: leaves. They don't wait. They don't sign up. They find a competitor who has it. A Shopify pre-order strategy turns those dead pages into active revenue — and for COD merchants bleeding cash flow while couriers hold their money, it's not optional.
For most merchants, that's an annoying reality. For COD merchants, it's a compounding disaster. You're already waiting 7-21 days for courier remittance on delivered orders. You can't restock until couriers release your cash. And while you wait, your best-selling products sit at zero inventory with a grayed-out button telling customers to shop elsewhere. Pre-orders break that cycle — and the math is more straightforward than most merchants think.
What Does an Out-of-Stock Product Page Actually Cost Your Shopify Store?
Most merchants calculate out-of-stock losses wrong. They look at the product price and multiply by estimated missed visitors. That misses the bigger number.
When a customer hits a dead-end product page, you don't just lose that sale. You lose their lifetime value. A customer who buys once has a 27% chance of returning. A customer who buys twice has a 49% chance of buying a third time. Every "Sold Out" button doesn't cost you one order — it costs you a customer relationship that compounds over months.
There's also an SEO cost. Product pages that consistently show out-of-stock signals get deprioritized by Google over time. Your organic rankings erode quietly while the page sits dead. A pre-order button keeps the page commercially active, which keeps Google treating it as a live shopping destination.
Three Shopify Pre-Order Models — Pick the Right One for Your Business
Not every pre-order works the same way. The model you choose depends on your cash flow situation and your customer's willingness to pay before receiving the product.
- Pay-now pre-order. The customer pays the full price upfront. You ship when stock arrives. This works best for high-demand products with loyal customers who trust your brand. It gives you maximum cash flow but requires strong brand credibility. If you're selling a $120 product that regularly sells out, pay-now pre-orders can fund your entire next production run.
- Pay-later pre-order. The customer reserves the item with no payment. You charge them when it ships. This has the lowest barrier to entry but also the lowest commitment. Expect 40-60% of pay-later pre-orders to cancel or go unfulfilled. For COD merchants, this model barely moves the needle on cash flow.
- Deposit pre-order. The customer pays 10-30% upfront, and the rest on delivery or at shipping. This is the sweet spot for most merchants — especially COD stores. A 20% deposit on a $50 product collects $10 immediately. On 100 pre-orders, that's $1,000 in cash you have today instead of waiting three weeks for courier remittance. The deposit also filters out fake orders: customers who put money down are 3-4x more likely to accept delivery.
For COD merchants, option three isn't just preferable — it's the only model that solves both problems simultaneously. You capture the sale and you get cash now.
The COD Cash Flow Problem Pre-Orders Actually Solve
If you run a COD store, your cash cycle looks like this: you pay suppliers for inventory, customers order and pay cash to the courier on delivery, the courier holds that cash for 7-21 days, then remits it to you. During that gap, you can't restock. You can't fund ads. You can't pay suppliers for the next batch.
Pre-order deposits collapse that timeline. Instead of waiting for couriers to release cash, your customers are funding your next inventory cycle directly. A store doing 500 COD orders/month at $40 average with a 20% pre-order deposit on 30% of orders collects $1,200 upfront — cash that would otherwise be locked in courier remittance for weeks.
That $1,200 buys inventory. It pays for the shipping on the next batch. It keeps your ads running while couriers sit on your money. The deposit doesn't replace COD — it supplements it with enough upfront cash to keep the business moving. (For a deeper look at the courier remittance problem, see our guide on COD cash flow management and courier remittance delays.)
Set Up Back-in-Stock Alerts That Actually Convert
Pre-orders capture customers who are ready to buy right now. But some visitors want to wait for the real thing. That's where back-in-stock alerts earn their keep — if you set them up correctly.
The default Shopify "Notify Me" button collects an email and sends a generic restock notification. Conversion rate on those: 2-5%. That's because the email arrives days or weeks later, when the customer has already found an alternative or forgotten why they wanted the product.
Stores that treat back-in-stock as a proper campaign see 5-10x those conversion rates. What they do differently:
- Send the notification within 60 seconds of restock — not the next morning, not in a batch email
- Include the exact product with a one-click "Buy Now" link that goes straight to checkout
- Add urgency that's real, not manufactured: "12 units restocked — you're one of 47 people waiting"
- Follow up with SMS in addition to email — SMS open rates run 90%+ vs 20% for email
The combination of pre-orders for buyers who want it now and back-in-stock alerts for buyers who want to wait covers both customer types. Most stores only address one.
Mobile-First Pre-Order UX Matters More Than You Think
63% of Shopify orders happen on mobile in 2026. If your pre-order experience requires scrolling through terms, filling out extra fields, or navigating a separate page, you'll lose the sale on mobile before the customer even commits.
The pre-order flow should work in two taps: select the product, tap "Pre-Order" (or "Reserve with Deposit"), and land directly on a checkout or order form. The deposit amount should be visible on the button itself — "Pre-Order · $8 deposit" — so there's no surprise at checkout.
Three details that kill mobile pre-order conversion:
- Hiding the estimated shipping date. Customers who pre-order want one thing: when they'll get it. Put the estimated date directly below the pre-order button, not buried in a FAQ accordion.
- Requiring account creation. Guest pre-orders should be the default. Forcing sign-up before a deposit adds a step that drops 20-30% of mobile shoppers.
- Unclear refund terms. One sentence below the button: "Full deposit refund if we can't fulfill by [date]." That single line increases pre-order conversion by 15-20% because it eliminates the customer's only real objection.
The Pre-Order Math: What to Expect From Your First Month
Merchants who've never run pre-orders tend to overestimate demand and underestimate conversion. Here's a realistic baseline for your first 30 days.
If a product page gets 1,000 monthly visitors while in stock, expect 300-500 visitors while out of stock (traffic drops because the product isn't appearing in Shopping ads or buy-button placements). Of those 300-500 visitors, a pre-order page with a deposit option converts 8-15% — compared to 0% for a "Sold Out" button. That's 24-75 pre-orders on a single product in your first month.
At a $50 average product price with a 20% deposit, that's $240-$750 in immediate cash from a page that was previously generating nothing. Multiply across 5-10 out-of-stock SKUs and the numbers start to matter.
The conversion rate improves over time as you optimize the pre-order page copy, estimated delivery dates, and deposit percentages. Stores that've been running pre-orders for 6+ months report 15-25% conversion rates on high-demand products — customers who actively seek out the pre-order because they know the product sells out.
Choosing the Right Deposit Percentage
Too high and customers won't commit. Too low and you don't filter out fake orders or generate meaningful cash flow. The sweet spot depends on your price point:
- Products under $30: 25-30% deposit. On a $25 item, a $6 deposit is low enough to feel trivial but high enough to signal commitment.
- Products $30-$100: 15-20% deposit. A $15 deposit on an $80 product hits the right balance.
- Products over $100: 10-15% deposit. Higher-priced items need lower percentage thresholds to avoid sticker shock on the deposit alone.
For COD merchants specifically, deposits serve double duty. They generate upfront cash and they reduce return-to-origin rates. A customer who's already paid $10 toward a $50 product is significantly less likely to refuse delivery than a customer with zero financial commitment. Stores using EasySell's partial payment system for pre-order deposits report 25-35% lower RTO rates on deposit orders vs pure COD — which means fewer wasted shipments on top of better cash flow. (See how a ₹50 deposit dropped one store's RTO from 35% to 12%.)
Stop Treating Out-of-Stock as a Dead End
Your best-selling products will go out of stock. That's not a failure — it's a signal of demand. The failure is letting that demand evaporate with a gray button and a shrug.
Start with your top 3-5 products that sell out most frequently. Replace the "Sold Out" button with a pre-order option and a 20% deposit. Set up instant back-in-stock alerts for the rest of your catalog. Measure the cash collected in 30 days against the zero those pages were generating before. For COD merchants, compare your restocking timeline with deposits flowing in vs waiting on courier remittance. The difference funds your next inventory cycle weeks earlier — and every week earlier compounds into faster growth.