The 50 was just thrown out there as a point of reference. I really had no idea how long reloading takes - wasn't sure if it was in the 20 minute, 60 minute, or ??? range.
Sorry I didn't give you the straight answers you were look for, but I thought they had already been answered by reloaders far more knowledgeable than me, so I made a feeble attempt at dry humor.
IIRC, the first 50 rounds I reloaded (.45acp) took me the better part of a day, but a lot of that was learning how to adjust the dies, measure the powder, etc.
After I finally figured out how everything worked and fit together, I could easily reload 50 per hour, not counting case prep time. (Washing and/or tumbling)
But, you may be right about the turret press. I just looked at a YouTube video about loading .45s with a turret. Looks pretty slick.
Basically, a turret press is 4 single stage presses in one assembly. The increased throughput is from only having to mount the case in the caseholder once and not having to dismount and remount the dies between each step in the reloading process. If so desired, the auto advance can be disabled and it can be used manually as a single stage for batch processing.
You didn't ask, but mentioned here a few times, progressive presses are faster than turrets because once the case, bullet and primers feeder as well as the assembly line contained within the press are filled, you get a completed round with each pull of the handle.
Much to my wife's chagrin, I don't keep track of time while reloading


, but I'm pretty sure I'm at least two or three times faster with my Lee Classic Turret than I ever was with a single stage press. I used to use a hand-primer and now I do it on the press, so eliminating that step cuts the time also.
I only reload .38spl & 357mag these days, but I'm still set up for .45acp and will do more of them if my stash ever runs low.
I've got separate turret plates with dies and powder measures (Lee Auto Disk) for each caliber, so changing flavors is quick and simple.
Some people don't like the Lee auto Disk because it (allegedly) doesn't drop flake and extruded powders consistently, but I only use spherical grain powders with them, so I've never had any issues with them. BTW - I used to weigh every 10th powder charge, and then every 20th, but now I weigh the 1st, then when the hopper is about 2/3rds and refill it when it gets down to 1/ 3rd . Of course, I'm only building mid-range loads for plinking and punching holes in paper, so 0.1 grain either way doesn't matter. If I was loading near max pressure, I would weigh each and every powder charge.
I'll have to do a little more research about what might be missing from the single-state kit v. what might be missing from the turret kit. I know I'll have to buy caliber specific die sets, but I'm not sure what else I'd need (other than the kit, casings, primers, powder, and bullets) to pick up to get running.
If you don't already have one, Modern Reloading by Richard Lee is an excellent book. Granted it leans heavily towards Lee equipment, but it cover all aspects of the reloading process in fairly clear and concise language. The book is ~$13 at Midway and over $40 at Amozon, but you might find it cheaper elsewhere.
Lee "Modern Reloading 2nd Edition" Reloading Manual - MidwayUSA
You may want to buy other reloading manuals also, and there is a lot of info available at the various powder and bullet manufacturers' websites. Also, Lee (and other) reloading equipment manufacturers have some good info and videos available on-line.
Whatever you decide to go with, have fun and be safe.
John