# Validate a SaaS idea with prepayment > How to validate a SaaS idea before you build it: why money up front beats compliments, how to check the solution fits the customer’s week, and how to ask honestly for payment before the product exists. - Course: [From Idea to Profitable Product: Building Without Investors](https://productovi.com/courses/bootstrapped-product.md) - Module: Sell before you build - Lesson 10/30, ~25 min - Source: https://productovi.com/courses/bootstrapped-product/prepayment-as-a-test ## Validate demand: compliments are free **Alex Tutor:** Your next advising session at GarageDesk, and Nina is eager to start coding. Today's question: how to validate a SaaS idea with money before anyone writes code. **Sofia:** Shops liked the idea of reminders. Isn't that enough for Nina to start building? **Alex Tutor:** Liking costs nothing. Before Nina spends two months coding, test demand before building: ask shops to pay now for something that starts later. **Nina:** Pay for something that doesn't exist? That feels dishonest. **Alex Tutor:** Not if you say it plainly: what they get, when it starts, and all their money back if you don't deliver. That's a **pre-sale**. **Alex Tutor:** Think of a scale of signals: a compliment, “call me when it's ready”, an hour of their time, their client list, their money. Only the top costs them something they'd hate to lose. ![A staircase of rising steps holding, bottom to top, a heart-shaped balloon, a handshake, a clock, a notebook of contacts and a pile of coins.](https://productovi.com/courses/bootstrapped-product/inline/prepayment-as-a-test-illustration-2.webp) *The more a shop gives up, the more you can trust its yes.* ![Signals rise from a free compliment and “call me when it's ready” to an hour of time, the client list and, at the top, money paid in a pre-sale.](https://productovi.com/courses/bootstrapped-product/diagrams/m3-l2-signal-scale.png) *Only the top of the scale costs the shop something it would hate to lose.* > **Exercise:** Order these reactions from a shop owner from the weakest signal to the strongest. ## Check the solution first **Alex Tutor:** Before the price, check the solution itself. Walk each owner through a normal week with GarageDesk: who types what, when a reminder goes out, what the car owner sees. **Sofia:** Why not just show the demo? **Alex Tutor:** Show it, but ask where it would break in their day. That's **solution validation**: does it fit how they work, and is it better than the niece with the notebook? **Oscar:** Dennis asked who types in the mileage when a car comes in. I didn't know what to say. **Alex Tutor:** Write it down. Every question like that is cheaper to answer now than after launch. **Nina:** I'd assumed the mechanics would do it. Now I'm not sure they'd ever touch a keyboard. **Alex Tutor:** Then ask the people at the front desk, Martha and Dennis's niece. They know who does what when a car arrives. > **Exercise:** Which question best checks the **solution**, rather than the problem? ## The pre-sale offer: what goes on the page **Nina:** I'll make a one-page site with the offer. What goes on it? **Alex Tutor:** The price, what exactly they get, the start date and the refund terms. Nothing that isn't true: no invented customer counts, no features you won't build. **Nina:** “Reserve the launch”: three months for 1,800 UAH or a year for 6,000. Start in March. Full refund if we're not live by 1 April. **Sofia:** Why a refund date? **Alex Tutor:** It caps the risk on both sides: a guarantee for the shop and a deadline for Nina. ![At a garage counter, a shop owner hands over coins while the founder holds up a calendar page with one day circled in orange.](https://productovi.com/courses/bootstrapped-product/inline/prepayment-as-a-test-illustration-3.webp) **Oscar:** And if we miss 1 April, we refund all of it, no arguing. **Alex Tutor:** Yes. And until 1 April, treat that money as not yet yours: don't spend it on anything you couldn't take back. > **Exercise:** Nina is making a one-page site to pre-sell GarageDesk's automatic service reminders before they're built, with the launch planned for March. What should the site include? Select all that apply. **Alex Tutor:** Alex said to treat the money as not yet yours. Let's see how much that would be. > **Exercise:** By the end of January, **2** shops prepay three months (1,800 UAH each) and **2** shops prepay a year (6,000 UAH each). How much money must GarageDesk keep untouched until 1 April in case it has to refund? ## Not a fake door **Sofia:** Isn't this just a fake door test? **Alex Tutor:** A cousin. A **fake door test** counts clicks on something that isn't there, and nobody pays. A pre-sale takes real money, openly, with a date. Clicks show curiosity; money shows the problem is real. **Oscar:** And “call me when it's ready”? **Alex Tutor:** A polite “not now”. Record it as exactly that, not as a maybe-yes. **Alex Tutor:** Two ways to test demand before building. Which one answers Nina's question? > **Exercise:** Nina needs to know whether shops will pay for reminders before she spends two months coding. Which test answers that? **Sofia:** What if a shop wants to pay but asks for a discount first? **Alex Tutor:** Keep the monthly price and point to the yearly option: that's where the discount lives. Next lesson shows why. > **Exercise:** **True or false:** a shop owner who says “I’ll definitely buy when it’s ready” gives almost as strong a signal as one who prepays. **Alex Tutor:** Dennis is ready to pay, but asks for a discount first. What would you advise Oscar? > **Exercise:** GarageDesk's pre-sale offers 600 UAH a month or 6,000 UAH for a year. Dennis, a repair-shop owner, says: “I'll pay today if you knock 20% off the 600.” What should Oscar do? ## Asking Dennis, and the rule for a yes **Oscar:** I'm seeing Dennis tomorrow. How do I actually ask? **Alex Tutor:** Plainly, with his own numbers, and then stop talking. The silence after a price is his, not yours. **Sofia:** Can I write what Oscar says? **Alex Tutor:** Go ahead. Short enough to say at the counter. > **Exercise:** Write what Oscar says to Dennis at the counter to ask for a prepayment, in 3–5 sentences. Dennis pays his niece 4,000 UAH a month to call regulars when service is due. The offer: three months for 1,800 UAH or a year for 6,000, starting in March, with a full refund if GarageDesk isn't live by 1 April. Use Dennis’s numbers and state the offer honestly. **Nina:** And what result means we build? **Alex Tutor:** Decide before Oscar asks anyone, like in December. A number and a date. **Oscar:** Twelve shops. At least three prepay by the end of January? **Nina:** Agreed. If fewer, we go back to the problem, not to the code. > **Exercise:** Which rule should Nina and Oscar write down before Oscar asks the first shop? > **Key ideas** > > - Signals range from free to costly: a compliment, “call me when it's ready”, time, data, money. Only money shows the problem is worth paying to solve. > - Before asking for money, check the solution fits the customer's week: who does what, when, and where it would break. > - A **pre-sale** is honest: the price, what they get, the start date and a full refund if you don't deliver by a stated date. > - A fake door counts clicks; a pre-sale takes real money openly. > - Write the rule for “we build” (a number and a date) before the first ask. **Alex Tutor:** Next: why the yearly option is on that page at all, and what it does to the numbers. - Previous lesson: [Value-based pricing: start from the cost of today](https://productovi.com/courses/bootstrapped-product/price-from-the-cost-of-today.md) - Next lesson: [A yearly plan from day one](https://productovi.com/courses/bootstrapped-product/a-yearly-plan-from-day-one.md) --- Productovi Learning. Free, no sign-up needed to read.