Yeah I was going to say, those are some pretty nice pieces. Very cool indeed.
In fact, I bet if you made a set of just those style pieces you could sell that too. My only suggestion for an actual checker board only version would be to also make a few pieces that you could put under the pieces if they become "king" by getting across. I think there are a lot of people who are fans of checkers who would like a custom set.
Definitely has potential for more money if you made more.