If you are sending traffic to Amazon through an aff link, and they see you have copy/ paste descriptions, they will ban you.
Not common I don't think, if you have been accepted to the program, but if you haven't, they well find out.
Also, if someone tells them you are going against TOS, they will ban you.
But if you are not using aff links, it shouldn't be a problem. You're probably never going to out rank Amazon with a product on their site anyway, unless you have a niche specific site around that product.