Tin Canoe
If you're looking to start casting your own lead boolits head on over to Cast Boolits dot com
Scrolling down the forum to the reloading section will also help you get started.
Lead is kinda hard to find unless you luck out, then you'll be up to your neck in the stuff. Tire shops and scrap yards are a good choice. Yomomma is another.
Molds are easier to find Wholesale sells a bunch of different sizes, so the size and weight should be close to what you want.
Reloading gear will run you another few hundred on up to get the basic starter setup.
Save your brass, even if you don't reload for now, it'll come in handy later.
The Lyman Cast Bullet loading manual is a good start. I'd recommend another book, just to cross reference.
This isn't a cheap hobby, but if you peck away at it you'll have a stash of treasure in no time. Just keep at it.
And pray your wife doesn't sell it for what you told her it cost...