Can anyone tell me what is a reasonable price to pay for these MOP markers. Are the examples in the scan extremely common? I have access to a fair number of these but don't want to overpay. I have checked ebay and the prices are all over the board both in starting prices and auctions that actually received bids. Also, is it ok to clean these with a soft bristle tooth brush?
So I ask the experts, in general, what is reasonable?
As always, thanks.
Murph