How do I find out what supplies will cost me wholesale? I found a great site for craft materials and I've been purchasing retail and not making money. In order to see if it's worth my while to go ahead and form a business, I need to know what the supplies are wholesale. However, the company I am dealing with will not show me their wholesale prices until I show them a business certificate. It's like this for many online wholesalers of silk flowers. I am not trying to get around paying retail, just trying to come up with a realistic business plan. Any advice?