I just got mine from the Daily Steals offer, it took just over a week to arrive. It seems to work fine, so here's a couple of quick things.
The circles of plastic tape that are supposed to show if the package had been opened, well, they were cut, so my package had been opened. That said, it looked brand new, with the sticker still over the touch pad, no visible scratches or finger prints. Came with a power cable, user guide, and one of those cloths to wipe the screen. If anything else was supposed to be there, it was gone.
The sticker on the Lapdock itself seems to indicate it was manufactured on Nov 7th, 2011. I don't know if that's when they all were manufactured, and they just never sold to expectations, but it is almost a year old.
After reading a some threads here and other places, I have a couple of tips.
I was constantly getting the "low memory" pop up. I ended up moving a lot of my apps to the SD card, from the phone's memory. I also turned off background data on the phone screen itself, then I did a quick "fast reboot" to clear the memory. I don't know which of those steps helped, or if it was a combination of them, but after doing all that I haven't had a single "low memory" pop up. I'm typing this from the lapdock now. I do only have one window open, trying no to tax the RAM, so I don't know what would happen if I started opening up windows like crazy. I was happy to have the memory warnings stop, so I wasn't going to push it.
I've also heard it's best not to have the lapdock plugged in while you're using it, as the battery can get extremely hot. Now, that seems like a silly thing to worry about, "don't plug in your lapdock, durrr" but if it helps keep the battery from overheating and prematurely dying, then it's worth mentioning. Especially since I don't know if I have any kind of warranty getting this from Daily Steals.
Overall, it's a neat little toy to play with. Worth it for the $50-60 range. Nothing groundbreaking, but fun to use.