I'm not in the practice of posting unsolicited opinions about vendors, mostly because I've never really had any notably bad experiences in the past. But I guess if you buy camera equipment long enough eventually you'll run into a rotten vendor and DigitalRev qualifies.
They're having their "Big Sale" right now (their biggest ever according to their website) and they advertised several lenses at very deep discounts, including a Zeiss 35mm ZF.2. I ordered the lens and paid with PayPal. I get an email a few hours later saying that my order has been canceled because they don't have the lens in stock and they can't find any vendor who can commit to supplying them the lens in the future. I write back and tell them that I'm in no hurry and ask that they reinstate my order. Before they respond I go back to their website later that night and see that the lens is listed at the original, non-sale price and shows in-stock for immediate delivery. I tell them about the inventory status and ask them again to reinstate my order and ship me the lens that I paid for and that they have in stock. They write back and, incredulously, tell me that once an order has been canceled they can't reinstate it.
So in summary they lied and told me my order has been canceled because the lens was out of stock and couldn't be obtained yet they obviously have the lens on hand for people wiling to pay full price but reneged on my original order/payment. This experience was a big let down for me because I really enjoy their reviews on YouTube (that Kai guy is hysterical) and they seemed like a legit outfit but apparently they're just another New York-style bait and switch shop (I guess Hong Kong has those too).
Buyer beware.
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Kodak Instant Camera
Kyocera 1MP Camera phone (pre-paid phone plan)
http://horshack.smugmug.com/