Let me explain why nobody will be leasing from you:

- You're some guy on a forum. What assurances do I have that if I send you this (substantial) amount of money, you will hold up your end of the bargain? (this is honestly as far as 99.9% of the people would get in the cost/benefit analysis).

- Because you're not leasing the hardware, just the bitcoin return, one has to consider the math and motivations and they will see that you have to be trying to scam people. Let me explain. Because you're providing only the bitcoin return (and not just leasing computers for general purposes that have AMD GPUs...which would lease for 1/10th the rates you're asking, by the way), it's purely an issue of math. In order for this deal to make sense compared to simply taking the $750 and buying bitcoins on an exchange, there would need to be a substantial margin available. In order for their to be a substantial margin available to your customers, you would have to be willingly taking a loss compared to just mining yourself and keeping the coins.

Basically, in order for this to be worth it for a customer, it requires you deliberately losing money. When somebody proposes a business deal that clearly would result in them losing money, HEAD FOR ZEE HILLS.

Basically, you're looking to take advantage of people. So gtfo.