I was looking at the bulletin board the other day and saw some crafting supplies I wanted. I remembered reading that if you go directly to that persons house/hotel room you can buy directly from them and avoid the 20% broken commission.
I set out to the area where this player was living (its lists there name and location on bulletin board) and went to the inn they were staying at. I right clicked on the hotel door where the little house icon comes up and one of the options (visit) brought up a list of people, I found the one I wanted to buy from and chose visit and bam.. I was in their house! This surprised me a bit, but they were standing there with a Merchant prefix on there name. Right clicking on them brought up an option to buy from merchant.
I don't know how many people know about this but I think its really cool and will be a good incentive for merchants to keep their houses tidy and get some cool items in there for customers to look at. I'll be crafting up some furniture for my house before I start bazaaring again :)