Lucky The Gambler in New Rach currently offers 10c, 100c and 1s gambling tokens for sale. First off, he doesn't have the bot, offer the option to gamble, or allow you to sell the tokens back, so unless a player realized there are gambling dens as plot buildings they feel they are out of luck and wasted their coin. I bought some of each type to see if they actually worked at the player owned gambling dens and only the 100c ones do. The 10c and 1s tokens can neither be used or sold there either.
I would suggest that these tokens either be removed completely, or only offered at the player owned dens. Personally, as I enjoy using the gambling den here and there, I would not mind seeing the 10c ones just be removed (as 500c is the lowest bet) and the 1s being both sold and accepted at player owned dens.
This is on Chaos shard, although I'm sure the issue is probably on all shards.