I am about to completely out myself with just how big a nerd I am.
Will is correct, they are over priced. They are snobs. They will put you down and look down on you for buying something they don't think is cool (or was cool when you could only find it in Japan or Usenet groups). It's not a pleasant place to shop but they do have a great selection of stuff and give you the ability to rent-to-own movies. If you've rented something several times the cost of your rental is put towards your purchase should you decide to just buy it and save yourself a walk.
The shelves are packed with books that are in my opinion, not very good but I don't like manga that's aimed at 12 year old girls, and they have a lot of it because that's what sells in North America. At the same time they have a lot of books made in North America in the style of Japanese manga and those don't work at all. They're like the book equivalent to Asian countries trying to make "Hollywood" movies. The look is there but something is lost in the translation.
If you're looking for toys or figures or model kits this place a pretty wide selection to choose from. However, does anyone even like Gundam anymore? There seems to be a little too much of that in stock.
To sum up, the place is kind of a last ditch effort to find something if you don't see it at the snail, beguiling or hairy tarantula. I'm giving them a three because they just have so much stuff.