Hi mate,
I love the look of those,
I'm not really looking at purchasing anything right now but i'm here to share some sugestions that'll make your product more valuable etc.
My first suggestion, is countersinking the holes and using countersunk screws, so the screws don't scratch the carbon fibre some racers have as a chassis plate.
My second suggestion is putting a non-slip foam surface on top, just in case you bump the table the car won't slide off.
And my last suggestion is putting rubber feet on the bottom, so it doesn't slide anywhere.
Hope you enjoyed my input and goodluck with your sale, Looks like it was made very well.
PS. Nice ABS on those rims
Thanks,
Rob.