just 2. Aaronbtxnc handled our last shirt/hoodie order (and still has hats left). I do the stickers/coozies/etc.
biggest hurdle is that demand is low and preferences for a product vary wildly. the second is that I can't afford to have product on hand, sitting around waiting for someone to buy. waaaaay too much money for a broke guy like myself to invest. Coozies alone are going to be over 200 bucks and the CC bank account is way less than that (just paid the annual website fees). that's why we do pre-paid batch orders on shirts/hoodies/hats. I tried my hand at it and we lost money. Other members have stepped up and handled an order or 2, but they eventually lose their ambition after discovering the "joys" of selling mail-order. I keep doing the stickers because there's a lot less on the line (even so, I just bought 65 bucks worth of stickers).
I've thought about doing one of those online buy-as-you-go sites, but haven't put any serious effort into the research.