The first thing I bought to go with my Lee Loader was a priming tool. There's some old ones around that load one primer at a time, and they are better for saving space. Not available new. The auto primers are fine, just bulky. You don't really need them, just don't be surprised when you pop the occasional primer. Bad for the nerves and makes the cat jumpy, but that's all.
If you get a Hand Press, be sure to get the one with the priming attachment so you don't have to fuss. A scale is handy, otherwise get the dipper set. Get both, if you can afford it.
A few chamberings take a bit of grunting to resize. Find out if what you are reloading is one of them, and consider getting a bench press ifso. Carbide is good here, too.
Reloading tools are part of my "bad times" supplies, so I'm not selling any of mine, even though I'm not likely to use most of it. I can't tell ahead of time what part I will want, and what parts to give or trade to my neighbors so they can guard my back. But, if you are considering what to get that holds it's resell value, buy used Dillon. Keep the rust off and you can resell for about what you paid for it.