They are definitely intriguing with a lovely design. I have a different kind, 1/10 gram from karatbar I paid $4cad , at the time it was strait spot with no premium each for a bunch (quite some time ago and when I say I got a bunch...I mean a bunch)per bill for brand new crisp ones to have as a spendable bill if society ever came to that and then saw a crumpled up raggedy one of the same selling for $18 in my LCS shop the next day, I was a little tempted to sell then but still have them. I don't know their true collector value on top of spot price but, curious little product indeed and seem to carry quite a premium in the after market.