Buy a Lee Pro 1000 Progressive for the .40cal or a Loadmaster, and swap out the dies with .357sig. Setup cost=less than 250.
Not unless you are extremely patient & mechanically inclined, the Lee progressives are crap IMO. The Lee Classic Turret is a better machine, a bit more than $250 for the press, dies, scale & powder measure w/ some small access, but well worth it. Don't go cheap IMO, good equip last forever. I have been reloading for 35yrs now, still have my first single stage press.
Get Tha ABCs of Reloading & a Lyman #49 manual, read them both, then read them again. You'll have a better idea what you need vs what you want. I would say 90% of the reloaders buy more press than they really need.
The 357sig is NOT the best caliber to start with, but can be safely reloaded for less than the cost of cheap factory 9mm. It's very bullet specific & bullet setback is a big issue. The only carbide dies are the expensive Dillon, but you can use Lee dies & size in a 40 carbide sizer for a lot less. Consider a reloading class for this one. The NRA offers them.