So this is the best deal I've seen on The Tile devices - it's a 4 Pack that's at Staples - bough 1 the other day and grabbed a second 4 pack just now since I Had a $5 Off Rewards from Staples so 37 and change after tax. It's great to help keep track or and find your stuff especially if you misplace things or leave your laptop at work as I do from time to time. Downside to the Tiles the batteries can't be replaced. But this th ebest deal I've seen on the Tiles - not sure how long the 39.99 is good for though. Also it appears to be in store only as I can't find it online.