Here's my 2 cents. Ammo prices have more than doubled for the most part in the last 10 years. If you have any intentions of stockpiling more than a few thousand rounds of various calibers, you either have to have cash you don't know what to do with or reload. I started out with a Lee Anniversary kit.
Here's my advice. If you are going to reload, budget a minimum of $1000 on just equipment. Yes, you need a single stage press for various operations. But if you go out and buy a mediocre press, you'll end up upgrading it. Depending on what increments you upgrade in, you could end up having much more money in it in the long run.
I use a Hornady LNL AP with case feeder, an LNL single stage, a Giraud case trimmer, etc. As far as single stage presses go, go with a Lee Cast press, an RCBS Rockchucker or Hornady LNL. For a progressive, only go with the Hornady LNL AP or a Dillon 650. The 550 is a good press but the optional case feeder is not capable of doing rifle calibers. You'll probably get tired of feeding cases individually by hand so you will want that capability in the future.
Just a couple years ago, I was loading lead 45 acp for about $5 a box. Now it can easily run $10 a box. Cheapest 45 acp you will find in stores is $15 a box on sale. I've got approx. 300 pounds of wheel weights so I will start casting my own shortly.
I don't intend to run you off with the equipment prices but I want you to know what you are getting yourself into.
Someone asked how I process my brass. My process is evolving. I started off tumbling and using Hornady unique lube. Takes forever to lube. I tried one shot and that stuff is junk. Dillon spray lube is the only way to go. I run them all through my LNL AP to size and deprime. Then I'd tumble again to get the lube off an help clean the primer pockets. I will no longer tumble the second time. The Dillon case lube doesn't really leave much residue once it's dry and the media really likes to hang up in the flasholes and also is just that much more of a mess and gets everywhere you don't want it to on a progressive press. Next I trim.
I take out the sizing die and put in a decap die to get any media out of the flashole. I won't need to do that anymore since I won't be tumbling the brass the second time. The decap die can catch on the mouth of 223 brass so it does slow it up a little. I then load up with primers and powder and have at it. You don't want to run batches of less than 1000 on a progressive as it takes time to do caliber changes and get everything dialed in. You can have true quick changeovers but can cost several hundered dollars more to buy all the stuff needed to do it, especially on the Dillon.