No, it will work. It's a coupon code that they always have used. You don't have to be a return shopper. But if you're paranoid about it, you can just buy a cheap water bottle or something, then buy the bike after that.

Also, you have to remember that the $570.19 does not include shipping charges. What they do is automatically give you a $41 credit, but after you type in your shipping info, the same amount is charged so basically means $0 shipping. So after the shipping charge is applied, you're right at ~$612.