I checked out the ebay link, and I have to say I'm a bit skeptical.
I'm not saying that this won't be a good product, but there are some things in the auction that raise a few flags for me.
The picture on the auction is definitely a copy of a pic that was on the original Tact-Tiles site, but there is a note that these new tiles won't work with the old ones? The tiles are essentially puzzle pieces, and I'm curious as to how the new ones could be marketed with the name and depiction of the old ones, yet not be compatible.
The auction is listed as a pre-order and that after this limited time the tiles will only be available through retail outlets? They are sorry but they don't have pictures of the actual product?
I wouldn't order something like this without a bit more information about what I was really getting.
Once again, I'm not saying this product won't turn out to be a great product, but my Caveat Emptor meter is twitching.