What are the mats specifically for? If it is martial arts I would check with any of the upcoming tournaments in your area. A lot of the tourneys will sell the mats afterwards. You have to pick them up that day but can get a decent deal.
I bought 6 crash pads 5 X 7 from a local gymnastics studio. Don't know if either of those ideas help.
What we think, or what we know, or what we believe, is in the end, of little consequence. The only thing of consequence is what we do. -John Ruskin