I like Crossroads Trading. There is a big one on Capitol Hill and a smaller one in University District. It is a great place to get fancier Nordstrom level brands at 10-20% of the original price. I sell there too and they'll give you 50% of their selling price as store credit and I think 30% as cash, your choice. Another place would be Buffalo Exchange, there are several locations, and they have more of a variety of stores, more middle of the road brands.