I've greatly realized that chainmail is one important thing. It's time-consuming. Making a bracelet for yourself is fun. Making 20 bracelets to wholesale to a store is mind-numbing. As with any other type of art or manual labor, the market never gets flooded simply because people will realize how much effort it takes to produce notable quantities. Just because you can paint, doesn't mean you want to make a living off it.
If I were selling items through the store, I'd probably give the store owners a cut or make the customer pay for it through the register. I'm not doing this to make a living off of, I'm doing it for fun and enough cash to have fun with. I'll sacrifice a bit of profit if it means keeping good business terms with buyers.
If anything though, I'd probably sell different items out of hand than what I supply to the store. Since the store would be taking dicebags, then I'd be selling bracelets, keychain fobs, earrings, and stuff like that. Though custom or odd-make dicebags I'd sell out of hand, since those likely wouldn't be stocked by the store.
Gonna spend some time mailing, any suggestions on dicebag make, color, or size that I should work on? I think my basic size will be "large enough to fit a coke can" but I don't know how many dice the average gamer has.