Hi Top; It's very difficult to say what is "rare" anymore with respect to Cuban chips. What used to bring several hundred dollars on the market as recently as a year or two ago are now selling for well under $50 today. It's as if someone in Cuba discovered what prices they are bringing in the U.S. and hoards of them are showing up in this country.
Some Cuban chips with Wilbur Clark's photos on them for example, which used to bring hefty prices, are now fairly common. Top, I'm sure you know that your neighbor there in Florida, John Benedict, deals quite extensively with Cuban chips and is quite knowledgeable about "rare" ones vs. some "not so rare". You may want to contact him. Regards, Archie