You can pretty much disregard the cost of brass for .38 Spl handloads. Years ago I read a report of a guy trying to compare longevity of .38 brass from brand to brand. He loaded a nice, wadcutter target load, careful to not over-bell the case mouths, nor to over crimp the loaded round, and gave up after experiencing one cracked case mouth at the 80 reload count, another in the 90's, and still more chugging along past one hundred reloads!
.357 won't last as long, because they need more crimp, meaning that each time you bell the case mouth, and then re-crimp it to securely hold the bullet in place, the case mouth gets work hardened and cracks sooner. I still get twenty or thirty reloads on .357, except for the nickeled cases, which seem to crack sooner.
A nice modest single stage press with priming attachment, a scale, carbide dies, probably a measure, (but a set of scoops will get it done,) certainly a manual, most of which will come in any starter kit, and you would be good to go. Prolly churn out a modest 50 rounds per hour, especially if you accumulate brass and do each stage in large batches, so you are not spending time changing out dies too often.
This is sort of like buying a pickup. Most of us would get along fine with a half ton, two wheel drive, standard cab, 8 foot box, plain jane fit and finish. That would haul just about everything we could ever consider putting in our truck, - me, myself, and some days my wife!
Is that what we buy? Oh, no! We gotta get at least a 3/4 ton, maybe a one-ton, 4X4, off-road, skid plates, winch, light bar, with the top of the line interior finish, mag 20 inch wheels, and if I left any options out, feel free to add them after-market! 'Cause we might just poke down that country road some day to see what lies down that-a-way, and who knows, we might need four wheel drive to turn around!