thats cool, and I think they are a very cool idea, but I'd want 4 sets....
In an effort to come up with a cheap solution, I stopped at Staples ands Home Depot today. My Staples buy consisted of 2 12"x12" dry erase tiles for $7, a dry erase marker and a permanant sharpie. Total price $12.
My Hope Depot buy consisted of a 4x8 sheet of white melamine, which the stud at Home Depot was nice enough to cut into 2 4' squares that I could fit in my car. Total price. $12.
Got home abd broke out my ruler ant the permanent marker and put a grid on the tile. I didn't do full likes...just a "+" every inch to mark the corners of the squares. I'm going to let it dry overnight and see if thedry erase marker will erase the permanant marker. I suspect it will.
Also took the melamine over to my shop, put in the plywood cutting blade and chopped it up into 1' squares. 32 squares for $12.
Once I know if the dry erase marker takes off the permanant marker or not, I'm going to try putting a grid on the melamine.
Yes, while they don't interlock, they are the same size as the Tact Tiles at a fraction of the cost.
now....for those who think I'm cheap. I also ordered two molds from hirstarts.com to make plaster dungeon scenery. Grand total for the molds alone was $70 after shipping and handling was figured in. And there will be a lot of work ahead of me when I get the molds.
Will post more on my homemade Dungeon tiles whel I know more.