I've purchased two bags so far from Designer Discreet. The first, in June- a Gucci Marmont in off white. Paid around £350 including shipping to the UK for the bag and when I eventually received it, I was delighted with it. The delay in shipping was due to customs wanting the brand owner' to inspect the bag, a total of 7 weeks I had to wait (not Dd's Fault...) however the thing that really impressed me was that this bag cleared a customs authentication procedure. That tells me the bag is a pretty decent replica, beside the fact that I can see that for myself. Even compared the real/replica side by side in Selfridges and I honestly couldn't tell them apart.
My more recent purchase was a Valentino Noir Rockstud satchel. The shipping only took 10 days as it wasn't held by customs, so I was pretty pleased with that. The bag is made of the softest, smoothest leather and the studs seem well stuck in place (although you get some replacement studs in with the bag, just in case) my sister has an authentic Valentino and she loves mine (i'm not telling her it's a replica;-))
Not the cheapest replicas around, but you get what you pay for...