I got mine for 20% off with free shipping. I think they're running a promotion until the end of the month. Google the promo code. I think it's xmas20. I've had mine for a little over a week now. It's weird, somedays, it seems to make a huge difference and my battery lasts all day with heavy usage. Other days, it drains as quickly as before. I guess the true test is really watching it when its idle. Sorry, I don't know how useful this post was.