Thought I'd quote this post. The numbers are probably wrong, this is over 2 years old. But it should help people get an idea of what the costs are.
Is the 4-500 a total number, or per caliber? I'll assume total now, and that amounts are evenly split. Based on this, and this comment in your first post:
I recommend the Lee Turret. If you stay in reloading at your stated rate, you will eventually want a progressive, but as Rod stated above me, the Lee Turret still is useful. Or if you decide to sell it, you don't lose much.
For cost effective dies, I would recommend the Lee Carbide dies (carbide reduces/eliminates case lubing, which is awesome for high quantity loading). The die sets include the shell plate.
Lee .45 acp 4 die carbide set $37
Lee .380 acp 3 die carbide set $26
Lee .38/.357 4 die carbide set $37
Reference post 13 in the FAQs. Your cost initially for the calibers you mentioned would be Dies + Shell plates + Press + 2x Turret + 2x AutoDisk = $110 + 2x $13 + 2x $25 + 2x $37 + $26 = $286
What this does not include is a bench, chair, primer flip tray (if not included in press kit), calipers, ammo boxes (gotta put the loaded ammo in something!), shell block (highly recommended) and other items I'm sure I'm forgetting.
How quickly will that pay off? You'd be surprised.
Brass $18.50/250 (should be able to get 1000 loads total out of 250 once fired brass pretty easily)
At a rate of about 150 rds / mo of each caliber, that's $20 (.45) + $17.25 (.380) + $17.65 (.38) = $54.90 / mo cost to shoot.
Cost to buy that ammo would be: $134
3* Ultramax Reman 230gr LRN .45 acp @ $16.99/50 = $51
3* Ultramax Reman 95gr FMJ .380 acp @ $13.99/50 = $42
3* Prvi 158gr LRN .38 spl @ $13.55/50 = $41
So you'd be saving approximately $75 / mo reloading, and you have $286 in equipment, so in about 4 months you've paid off all of the equipment.