I think PennSt.com is the trickiest one to evaluate. In and of itself, not sure there's great value in the name. But Penn State has a large alumni base. Their fans tend to be rather fanatical about their team, and equally fanatical about aquiring Penn State memorabilia. I live in an area where people who've never taken a class at PSU drive white vans with blue paw prints and will travel 4 hours in a blizzard to get to a football game... and can talk about a game played in 1973 as though it happened yesterday.
Never underestimate the power of a motivated buyer who just wants something for no other reason than to have it... even if only for a nifty email address.
