If you can live with the shame of being seen using Lee tools, take a look at their push through sizers. Cheap, and they work. Use with pan lube. Either cookie cutter the bullets loose, or press them out of the lube cake after it cools.
Or use the Alox liquid lube.
If you want to start this operation on the cheap, that sizer would be the first place I'd look to save a few bucks.
To start, you don't need much. A mold, a pot to melt lead in (I've cast some roundballs, using a tin can heated with a propane torch, held with a pair of pliers. Crude but it worked) a heat source if not using an electric pot.
Handles for the mold are useful. One of the posters on Castboolits fessed up to having done most of his early casting, holding the mold in a gloved hand. He said it went better with a set of handles!
What are you wanting to accomplish? Cheap shooting? Self sufficiency? Accuracy?
Look at the info on paper patching as well. It seems like a dark art, but will allow jacketed bullet velocities along with cast bullet prices. Also lot's of info on the Castboolits site.
Oh. And you get to choose between plain base and gas checked bullets.
Do lots of reading before you spend any money!
Cheers
Trev