One problem (and I'm not talking about Bob here but just the general subject of listing specific prices for specific chips) is that if you list prices on a trade list (like I do) you sometimes run into someone who values their chips much more highly than you do. If you list all your chips with a value of 20 percent less than catalog, someone will come along with all their chips marked at twice catalog and want to trade chips. If you don't have your chips with marked prices, you can then inflate your chips value the same way the other guy does and happily trade chips. The downside is as other have pointed out, without prices, some people may not want to bother trading or buying your chips at all.