I like that I can see what I have bough at auction. However, It would be really nice to be able to see what I've sold and for how much. That way, I can make sure that I'm not undercutting my own pricing from day to day. Also, I can track what has sold well, versus what has not sold (thus gauging supply and demand).
Also, if there is way of doing this already that I am unaware of, please enlighten me! :) I've looked everywhere, and I can't find it.