From the post:
This sale is the beginning of a transition in the terrain line for Legends of Kalidasia. The standard white space mats, which launched our terrain line of products, is being phased out. With the release of the newer Reflection Nebula Felt and Vinyl Mats, the remaining stock of the standard space mats are being sold off at half price.
The 6? x 4? Mat is only $20 and the 3? x 3? Mat is $10. These mats can be purchased in our Products Section