I have been on the lookout for a few rolls (edit: barrels) of used HSI primary $100s to complete my HSI set (which also happens to be my first set of Paulson's)! I completely underestimated the demand/rarity of these so I understand chances are I'll probably have to pay $5+/chip for good condition chips. If anyone knows where I can find them I'd appreciate a point in the right direction. Cheers