I have one for 45. Interesting, but not the way to go.
No one is really mentioning the downsides here, except for the lack of speed.
I'm no speed demon reloader. I tried a turret press, but liked single stage better. Now, I don't have room for a bench press, and I use the Lee Hand Press.
To me, this is a better option, all around, than the Lee Loader. Faster and easier. You can get started with it for less than $150. Probably closer to 100.
Lee Loader costs what, $30? For that money, I agree, it is the single most cost effective way to get your feet wet in reloading. Resizing non-necked brass is a bear though. It takes a LOT of hammering, and a lot of time, if you're going to load a whole box.
Richard Lee invented it for reloading rifle rounds one at a time while at the range. Great way to fine tune on the go. But not so great for loading any quantity over about 10 rounds.
Anyway, go for it. I think it will plant the seed in you. Just a sponge under the parts when you're hammering. Search youtube for "lee loader" and find the video with the older guy loading a rifle round in 40 seconds. That guy has got some practice.