It's almost impossible to know until you try it. It depends a lot on how good your offer is, and how good your site is. A rough guideline would be: expect betwe

It's almost impossible to know until you try it. It depends a lot on how good your offer is, and how good your site is. A rough guideline would be: expect between 2 and 10% of people. Which in your case would mean that the cost to acquire a customer would be between 20 (2 x 10) and 200 (20 x 50) US$ per purchase, which is fairly typical for, say, a consumer subscription product. It all depends though, on what you're renting out etc. You just have to try it.