Bought a Rockchucker kit like the one in post 29, in 1980, it didn't have a powder thrower in it. I still have, don't always use all the stuff in it, but, it has the least amount of upgradeable items, and the items that are upgradeable, are going to be to electronic gear, like a case prep ctr or a Chargemaster. Still have to add a trimmer, caliper, micrometer, dies, more trays, more reloading manuals. Has a good priming tool, case prep tools. Beam scale is something good to have around to double check elec scales with after a person gets one ( and they are the same accuracy level as the cheaper elec dispensers anyway) and to use when the elec one eventually kraps, and it will one day.
I bought a Forster trimmer to add to mine, used the RCBS case lube and pad, added a Forster dry neck lube kit PDQ, bought a Lee handprimer tool for it ( RCBS didn't make one yet) as I didn't like the press mtd version, and a set of Lee scoops. Worked with that for 30 yrs. There were a few other things I bought later in that 30yrs period, expander mandrels, casting equipt, few different powder throwers, flash hole uniformer,elec scale (not for powder).
Best things I've added in the last 15 yrs are cartridge and bullet comparator set, case prep center, 3 way cutters for trimmers, changed RCBS lube to Imperial sizing wax, elec powder dispenser.
Most value in an upgrade was the case prep ctr.