One of the best advice that I've read on this very forum is always make sure that you start at $47 if that makes sense for your product.
The logic behind it is that a lot of businesses give employees the power to buy stuff under this $50 limit without having to get it approved from their boss/deptt.
For me, it's about submitting expense reports. No receipt is required for expenses under $50. I'm 1000x more likely to try a tool under $50 than a tool over $50. I want to spend as little time as possible on expense reports and not needing a receipt helps.
The logic behind it is that a lot of businesses give employees the power to buy stuff under this $50 limit without having to get it approved from their boss/deptt.