I don't have any personal familiarity with the site, but I would question any site with prices that low. I can't say for sure about other designers, but I'm pretty sure that the Balenciagas they have are fakes, at any rate. The plastic wrap around the handles - a dead give-away. Other bags might be perfectly authentic, however. They have a US address (rather than China), a toll free contact number and a 15 day return policy (minus shipping), which is promissing.
Has anyone else dealt with them?