I assume folks are talking about the "All-As-Is" as the eBay seller,
I polled 5 or so recent GCT buyers from that seller and they said the units worked but needed AC adapters. One very recent buyer said seller was uncommunicative and hadn't shipped yet. It appears that the guy is a fast seller. If you look at the I-Opener d-diving thread I get a lot of things I can't/don't want to test when I sell them on eBay so I can understand the seller's situation.
Seems like it's worth a try if you're brave. Link to seller's auctions below...
"...stranglin a mandolin..."
ghostface killah lyric