PennyGrab is having a great promotion to celebrate their 1 year in existence! Use the code PENNYDOZER to get 10% off your bid packs, and also participate in games. Yes, exciting games, and win bids in the process! (the site is trying to promote the game angle, so the bids are quite generous. I am not sure how long that is going to last). You should be able to find these under the Games tab.