Any chance of getting some sort of new marketplace/bazaar set up. Just seems wrong going to the pub to go shopping. I'm suprised those guys are still sober enough to give the right change.
How about a new bazaar with stalls with the vendors who now live in the Rusty Nail, it's own auctioneer and possibly a trading board. Similar set up to the auction house except you can post items you wish to trade and either leave the offers open or put specific items/plat amount in there. Maybe even a 3rd person trader so the people doing the trade don't have to be on at the same time.
Give the vendor's livers a break and get them out of the pub and into the fresh air!