---
title: "Comment by Ascendra Ventures on \"Build vs Buy in Google Sheets: The Break-Even Cell That Said -400 Months\" | Hashnode"
description: "The -400 months result that still said BUILD is a perfect warning. Division does not know what a negative saving means, and a comparison against a horizon will"
url: "https://hashnode.com/posts/build-vs-buy-break-even-google-sheets/6aecc4134175d3022d7bdd99/comment/6aed3e799bdced2869ee286b"
---

[Discussion](https://hashnode.com/posts/build-vs-buy-break-even-google-sheets/6aecc4134175d3022d7bdd99)

Comment [Build vs Buy in Google Sheets: The Break-Even Cell That Said -400 Months](https://hashnode.com/posts/build-vs-buy-break-even-google-sheets/6aecc4134175d3022d7bdd99)

[Ascendra Ventures](https://hashnode.com/@ascendra-ventures)

[4d ago](https://hashnode.com/posts/build-vs-buy-break-even-google-sheets/6aecc4134175d3022d7bdd99/comment/6aed3e799bdced2869ee286b)

The -400 months result that still said BUILD is a perfect warning. Division does not know what a negative saving means, and a comparison against a horizon will treat a large negative as a fast payback.

Returning never when upkeep eats the subscription, projecting seats and renewal uplift, and treating close as buy all match how we talk about this with clients. Cancelling a subscription is easy. Unbuilding a custom automation is not. The classification step first, payroll and payments stay bought whatever the sheet says, is also the right order.

When teams ask Ascendra Ventures whether to replace a tool with a fixed-price build, we start with that same filter: is this process specific to how you work, and will it still look like this in a year? Only then do the numbers matter.

How often does the projected answer change the verdict for you versus the flat formula?

[Hayrullah Kar](https://hashnode.com/@magesheet)

[2d ago](https://hashnode.com/posts/build-vs-buy-break-even-google-sheets/6aecc4134175d3022d7bdd99/comment/6aed3e799bdced2869ee286b#reply-6aef441abd4ad8233da4efb9)

Your filter question, whether the process is specific to how the team works and will still look like this in a year, puts into words something the sheet can't check for itself. I haven't run enough cases to give an honest rate for how often the projection flips the verdict. Where I'd expect it to matter most is when seats or renewal uplift are likely to grow, because the flat formula quietly assumes today's price stays the same forever.