I have found it hard to get rid of 20 chips in a reasonable time period and unlike some collectors I don't want 20,000 duplicates laying around. I mainly play when there are at least 3 or 4 other players at the table and they are all betting a lot of chips. I normally take 7 or 8, cash in the rest and then quickly vanish behind the nearest bank of slot machines. Works for me. BTW I collect all colors from all tables.