This deal kept popping up yesterday- looks like it might stick around for a while now!
On Amazon you can grab Silicone Baking Mat Set (2 pk.) Non Stick Surface  for $10.06.
If I am reading about these correctly you use them instead of aluminum foil or parchment paper. I have never seen them but the reviews and the price seem perfect!
- Saves money!
- Silcone contruction – perfect for baking
- Easy to clean
- Great for multiple baking sessions
- Fits 1/2 size baking sheet, ideal for keeping you baking sheets clean.
The price kept jumping from $10 to $14 yesterday so if they are a bit more expensive keep an eye out- the price may go back down!