Aside from everyone else's replies, there's also the fact that the niche is smaller now.
Instead of companies dumping their excess stock on whoever offers to buy it, instead they're dumping it all on Amazon and ebay. A little more work but they get more money for it, meaning that there is less new overstock to go around.
I hope they make it, we need more stores with personality like American Science. I plan on making a trip out that way now that I know where it's located.