New to Fendi Spy bag: plz provide info/intro - like to buy one

  1. hi everyone,
    i have been eyeing on buying a fendi spy bag for the longest time, but i didn't know much about it and besides, it's a bit too expensive, but now, i might just buy one for myself. could you ladies please introduce or give me some info about it. i'm referring to the spy bag with the hidden buckle or compartment, the one with the flap. does it come in one size? i already know the colors, so dont' need that info. where can i find it for cheaper? could you guys recommend a good eBay seller? anyone have gotten an spy from eBay? who and how u like it? thanks a lot..any info is much appreciated ;)