Its very nice ot see you have the potentioal to start and run your gold shop! In order to get vouches mate, first I'd suggest is sell bonds (price up to you but I think you should sell it a bit cheap) and then once you got enough of them vouches, start the gold shop and use MM for for couple of trades, after a while if your a good seller and has sanctification for customer, you'll be able to buy/sell more easily!