Yes, it's true. http://tinyurl.com/nvo456 ...and yes, they're legit. I looked at the seller's comments and even though the price was "too good to be true" (seriously, it's half the price I've seen refurbished batteries selling at, let alone brand new), I took a chance a couple of weeks ago and ordered one. I arrived in about 10 days or so and it was indeed an original HP battery. I would have posted it sooner, but his listing ended and he hadn't re-posted the listing again until recently. I had assumed he had sold out of them, but I sent him an e-mail asking if he had any more. Apparently he has about 30 of them left. For the unaware, the slim extended battery attaches to the bottom of the 2710p and serves as a second battery, adding about 4 extra hours of computing power to the 2710p (+- 1.5 hours, depending on your usage). I went ahead an ordered another just for a convenient backup, as they're so thin and relatively light weight, they can be tucked easily into a small sleeve in a laptop bag. Anyway, just wanted to pass along the good bargain for those who own the 2710p. Naturally, I'd be happy to provide screen shots for anyone who might want/need further verification or whatever.