Thinking out loud

So I'm toying with the idea of offering some kind of a small business incentive to other small businesses, specifically other knitters who knit for pay.
When I was predominantly knitting for others I felt the "ouch" of retail cost yarn to my bottom line. Sure I could have raised my prices, but then that would have put woolies out of reach for many. That was of course until I discovered yarn purchasing through co-ops. That made yarn purchasing more bearable on the pocket book and the bottom line, but co-ops took forever to fill and then I had to wait for my items to ship.
- A certain discount on yarn purchases, but also a minimum requirement of some sort.
- No waiting, no co-op fees, ships direct.
- I would require a proof of business in a form of a license or tax EIN.