Trading in stuff in Akihabara?

Quick bump, found one of these among my possessions: http://www.ffmusic.info/ff7ltd.html and want to sell it off. Can I just take it to Mandarake in Shibuya? Closest place to me.

 

Dunno how much they'd pay. I'd prefer selling it online, after what I've read here on the board and considering my own experiences in Japan, that country is not a good place to sell stuff to shops. They offered me 5yen (!) for a CIB MarkIII game and 100yen for a Gradius 1 guidebook they had for sale for 2000yen.

They can go fuck themselves, no way I'd sell anything there. Absolute rip off >_<