who ever tried to sell you a set of dies for 80 "saw you coming"- gawd, how i absolutely hate it when "people" take advantage of a newbie ( in any sport) and try to sell him a cadillac-mercedes class of tools when all they need is a chev
i'm not going to pass judgement on whoever sold/talked you into an automatic,b/c that may be you and i don't wish to offend.
however , if more people would SERIOUSLY think about their usage, they'd end up with a REVOLVER as the FIRST gun instead, unless it's a 22- i have yet to see any advantage of revolver in THAT caliber
however, back to the main topic- the way to beat this ammo eating thing is to have multiple magazines, but ONLY LOAD 5-6 rounds PER MAG- that teaches you discipline almost as well as a revolver- having to "break" the cycle of pulling the trigger will slow you down and your sessions will last longer- ie you'll get more out of it- and tape your targets every magful, not every boxful- again, that slows you down- you can always miss in a hurry- it's normal for a person , esp a newcomer to blaze away for the first couple sessions and then taper off , but you get better with practice
as far as getting dies goes, i'd stick with reloads for now, as you're not ready and that's a whole science unto itself- and it's not just dies, you need a press, scale, and a bunch of other stuff as well- i've been at this some 40 + years and my rifles/pistols/shotguns represent the least of my "investment"