You should make a killing with that stuff on eBay assuming its like Prada, Louis Vuitton, etc.
I had a locker some years back full of Doonie and Bourke purses, now granted D&B isn't in the same arena as Louis and Prada, but still a pretty expensive brand, I've bought those purses for girlfriends in the past and paid $200 and more for Doonie purses on sale.
On Ebay however I had auctions going for like $12 to $15 for Doonie and Bourke purses, really kind of shocked me and was very disapointed in the results. I think Doonie and Bourke obviously isn't same level as the brands you meant and isn't as popular but was surprised how low that stuff went.
On ebay however I think you should do pretty good. My biggest fear with ebay is someone claiming counterfeit as ebay is insane about protecting brands like that and will kncok you off without ever even asking for your side of hte story. I'd first make sure they are all real.
If you dont wanna go the ebay route in my area we have a lot of these higher end resale shops where its all louis stuff. They sell on consignment and give you like 70% as long as you dont want the cash upfront. At the one near me they actually have a waiting list for Louis so pretty much everything I would bring in would be spoken for before it even hit the floor. See if you have any of those in your area.