On eBay, I mostly sell Prada bags, but lately I've been trying to expand into other kinds of items. I was told by several that authenticate4u was the best way to go, since they have different expert for each brand. When I first used them, response was reasonably fast: 3-5 days to get an authentication. However, I have had issues lately. On 5/26, I sent 6 or 7 requests in, along with fees, for some sunglasses. 6/3, I sent a follow-up email (since all I had gotten back was the auto-reply). To date, I have heard nothing. I am rather PO'd at this point, since the SNAD deadlines for some of the items have now passed, should they turn out to be fake. Ideas? TIA!