Originally Posted by janjer

I hate to rain on your parade but I agree with Jaciqltznok. It seems to me you have the most to lose if this arrangement doesn't work out. You will have spent your time and creative abilities and he probably keeps the quilt(s) since he paid for the material.
If you are really wanting to create quilts to sell, talk to quilt shop owners and get some additional information about the selling aspect. The quilts you sell would have to be your own design, commercial patterns are "for your personal use" and not to be made to sell. Does this man know anything about the quilt market?
You will have to pay income tax on your earnings. What effect will that have on your return?
Take your time, get answers to all your questions, then make your decision.