I had used their pile of loot feature and a few of the items I had bought had some price drops. I brought it to their attention and they have me the new pricing before my order shipped. I think BBTS is great. I like their email list as well.
I've bought over 100k worth of collectibles from them in the last 2 years and they are very good! Otherwise I would not risk that much money with so so sites. They are better than anyone else. Top customer service in my book!