I was in a similar position as you after my first 9-10 months, about a shortie worth of variants. The first 150 are like the gateway drug, nice shots of discovery adrenaline that set you up for collecting these seriously, and then finds become much fewer and farther between. You’ll keep finding those Superboy #4-5 like they grow on trees, but the #3 is elusive and the #2 is tough. Once you start getting to that level you may discover a new variant you need once every 3-4 months. I’ve found one that I needed in the wild this year (JLTF #32), and the others I’ve picked up either came from dealers that seek these out and mark them up appropriately, or other collectors in this thread.