Boulter Plywood. They are local to me (Medford, Ma) but ship nationally. I’m not sure what the cost would be. I got a Sapele Ply from them which is Sapele for every layer. It is similar to Mahogany.
Here’s a link for what I used it for so far. Sapele Plywood Dice Box
http://www.boulterplywood.com/laser_cutting_plywood_panels.htm