Fred those statistics are nice to look at, but I don't see how examining what's currently listed can give you confident purchasing data. You're only looking at what hasn't sold, and none of that which sold quickly. Also it seems to me that your data would be seriously skewed by just a few people who list things at unrealistically high prices with no intention of selling the notes except to fools. This increases your max markup, increases the avg, (MAYBE changes your purchasing, depending on how you have it set up) but the real market hasn't changed one bit.