You can get a brand new set from ClassicPokerChips in any color with any breakdown on that mold for $1.25 per chip. I would say on a really good day you might be able to get $.90 to a buck a chip, but more likely I think $.75 per chip is about right. At $.50 a chip you would have multiple people trying to take them off your hands.

What other colors and how many of each chip do you have?