I use a manilla folder cut to size to back my 8x10 photos. I use 3 stamps there then 2 stamps and a .$21 stamp on the SASE. Sometimes I get a postage due on my SASE, but not very often. I use a toploader with the front cut out and attached to cardboard for 11x14 photos or two pieces of cardboard with a window cut out of the top piece if I don't think the 11x14 will come back (I've gotten John Axford, Jonathan Lucroy, Ryan Braun, Wily Peralta, Barry Alavarez, John Kuhn, Donald Driver, and Randall Cobb using this method) I'm waiting on my Segura and Scooter from this year. I use six stamps each way on an 11x14.