Personally, and this is just my opinion, I don't sell anything I make wholesale.
I am a dealer myself, mainly antiques, so I completely understand other dealers' and shops positions on needing to profit from what they buy. Rule of thumb as a dealer, you need to buy at half price to turn a profit, especially selling online with all the fees.
I try and price my leather work at a reasonable retail price, and if I sold it wholesale it wouldn't be worth the time or materials to make it. Selling on consignment is almost as bad. If you inflate your price so you make a profit after paying the consignment fee, you may be overcharging and you won't sell anything.
That said, I don't make holsters, so maybe I'm completely wrong about this. There's also people that figure if they make enough to cover materials they're happy. So maybe I'm totally off base on this.