I own three REAL Louis bags, and two Pradas. My DB, Gucci, and Coach are replicas, but they cost serious benjamins. I think it depends on where you get them from... Swap meet, or from a person that actually specializes in replicas.
I bought this weird bag from Neimanns (Prada), and used it as a drumstick bag.
The Louis that I have one is a small purse, one is a backpack, and the other is a grandma purse.... But look almost identical to my replicas, and those three real ones combined cost about $2400...