I would really recommend a rcbs rock chucker kit to get started. I load my 30.06 on a single stage press (rcbs rock chucker) I weigh each powder charge and really take my time with that rifle.
I load .45acp and .223 on a Dillon 550b. It's a progressive press so you have 4 stations, each pull of the handle completes a round. I load anywhere from 5,000-15,000 45 rounds a year. I shoot lead and plated bullets to keep cost down. I can crank out 400-500 rounds an hour on the Dillon.
My .45 rounds cost about 14cents a round (not including brass), they shoot better and cleaner than any factory amo.
.223 cost about 35cents a piece, will consistently shoot nickel size groups at 100 yards. Better if I do my part.
You can get started on an rcbs for around $300 or so without any consumable (powder, primers, bullets). With the 2 set ups on the Dillon it's probably around $1000, I can switch over and be loading a different caliber in about 10 minutes.
Start on a single stage press and learn each step, take your time and have fun. When you start shooting a lot and know what each step is doing step up to a progressive press. I have shot about 1300 .45 rounds on the last month and probably 100 .223 rounds. I would still be loading if I was on a single stage press.