Ebay offers Blogilates Home Interlocking Gym Flooring for $26.99 (reg $49.99) with free shipping.

Product Description:
Add comfort to your home gym with cute gym flooring from Blogilates. This stylish gym addition provides cushioned support for your movement. Easy to put together, and versatile to add together for larger gym space.
Developed by leading fitness personality, Pilates instructor, and designer, Cassey Ho, the Blogilates gym flooring will add style and support to your home workouts.

• Dimensions (Overall): 12 Inches (H) x 12 Inches (W) x .45 Inches (D)
• Weight: 3 OuncesTransform your home workout space with stylish, fun, flooring
• 12 pieces per pack. Dimensions 12in x 12in
• Cushion support makes for a comfortable home gym while protecting your floors
• Easy to add tiles for larger spaces