Factory Direct via Rakuten offers this Folding Panel Gymnastic Mat for $74.99. Coupon code "SPORTS20" cuts that to $59.99. Plus you'll bag $5.90 in Rakuten Super Points. (You'll need to be logged in to get these.) With free shipping and assuming you'll use the credit, that's the best price we could find for this or a similar mat by $16. It measures 4x8 feet and folds out into four panels. Note: This coupon can only be used once per account. (You must be signed in to use it.)
If you know where to look, you can score freebies at the dollar store regularly.