Harbor Freight Tools has Anti-Fatigue Foam Mat Set 4 Pc for $6.99 with coupon 11516753 (Exp 11/30/17). $8.99 - $2 coupon = $6.99. IN STORE ONLY
Each piece is 25"x25" and the product is advertised as covering 17 square feet ($0.41/sqft). Each piece also comes with two edges (8 edges per pack). This is significantly cheaper per square foot than the CAP and EVA deals at walmart and amazon from earlier this month. That being said, this is NEOPRENE, not EVA. This is also not advertised as an exercise mat, and I have not used it as an exercise mat so I cannot comment on its ability to handle dropped weights, etc. (I'm using them for my children's play area). If putting multiple packs together there is some inconsistency as to darkness in color.
Previous coupons on this item had an item limit of 5. This does not, but I did have one store manager say that he was enforcing a limit of 5 - so I bought 5 there and went to another store and bought 12 with no problems.