I'd call a couple of fabric stores - you'd be surprised what they have in the "Remnants" pile, and I would think you could use real leather or faux leather for this. See if you can negotiate an even lower price, especially if there is any damage to parts of the remnant - those are no good for people reupholstering furniture, for example, but would be perfect for you since you can cut around the bad spots! These stores want to move this fabric, remember! They'll often work with you. Go to bigger places that deal in furniture upholstering fabrics as well as the regular stores.