Figure out what your tastes are first. You will save money in the long-run.
We could all rattle off boxes we would jump on in the blink of an eye if we came across them, but who is to say you would even like them. For example, I could tell you a handful of rare vinyl records I would buy if I ever saw them in a shop, but who cares if you don’t like the same music as me.
Learn everything you can if you’re inclined to put in the work. Watch things unfold over time. There is real scarcity, boxes that will never come around again. There is manufactured scarcity, essentially the majority of the RE program. You can also come across boxes that are rare, but are sold and resold over and over changing hands many times and nobody is actually smoking them (wonder if they’re any good?!).