I have been collecting for close to 20 years now and I have made a couple purchases of packs that I have seen offered for sale only one time (when I bought them). Clearly I know I don’t have the only unopened pack of these examples, but they all seem to be rare based on availability. Let’s see the “1 of 1” packs in your collection.
I'm still looking for Odd Rods, Oddest Odd Rods and Fantastic series 2