i dont think it makes you a terrible person. I think its a terrible idea to do that to an animal. An exception would be a rescued animal or an animal that is in need of help. Or a group buy or trade. I dont think someone should go out of their way to make money off of another living thing.

I respect the fact that you make the buyer aware of whats going on. Personally I wouldnt buy an animal that is being flip flopped

Thats just my opinion