Try doing a search and you will find LOTS of info on FP and other re-sellers.
It depends what brand you're looking for, and if you're looking to purchase or sell/consign your bags. There are several that are quite reputable.....try doing searches on Malleries, Ann's Fabulous Finds, Yoogi's Closet, Let-Trade....
Also, if you are looking to purchase, it is strongly recommended that you post the link inthe proper "Authenticate This" thread.....fakes have been known to slip through even the most reputable sellers.