I am accpeting Bitcoins, buy anything fron Amazon at 10% Discount on Any Goods or Products on Amazon A to Z Product from Any Seller.
You are going to have a very difficult time competing with Purse.io. I regularly get 20% - 25% discounts on Amazon through them, and I don't have to worry about being scammed.
This is exactly what I was thinking. I think almost anybody could start a Purse.io purchase forwarding service and take half the discount as profit..
Good luck with sales though, as I know it can be rough for a newbie.