We found this at five stores including Wayfair, Lowe's, and Home Depot. This product sells from $33.99 up to $37.99. Users can save 10% by shopping at Walmart.

This is the lowest price we've seen, typically ranging from $35 to $37.

This product is also marketed as the 

We Sell Mats – ½ Inch Thickness Multipurpose EVA Foam Floor Tiles – Interlocking Floor Mat for Indoor Gym, Playroom, and Home Use at Walmart

,

We Sell Mats Interlocking Blue Foam Square Indoor Anti-fatigue mat at Lowe's

,

1/2 in. Thick Multipurpose 24 in. x 24 in. EVA Foam Tiles 6 pack 24 sq. ft. - Blue at Home Depot

,

We Sell Mats – ½ Inch Thickness Multipurpose EVA Foam Floor Tiles – Interlocking Floor Mat for Indoor Gym, Playroom, and Home Use at Amazon

.