A lot depends on how much time you want to spend assembling the necessary gear. Buying a complete kit like the RCBS or Lee setups is a great way to go if you can swing it.
But if you use the contents of these kits as a guide to what you need, you can assemble what you need by buying individual components on eBay and by doing that you'll probably to upgrade to a better press for little or no extra money.
The trick is you have to know how to avoid lemons and stuff that's worn out. Overall, it'll add time to the process of getting up and running, so I think the kit is still the best bet in the short term.
I totally agree with you, the road to the poorhouse is lined with .243 cases. I just bought one and had to have some factory fodder until the dies I ordered showed up. $21 per box with tax! What a ripoff, over a buck a bang.
Right now, I estimate my costs for reloaded smaller-bore ammo (243, 22-250, 223) using good bullets are averaging $.37 per shot, not including the cost of the brass.
Powder .09
Slug .23
Primer .05
These are just my numbers buying locally and in variable quantities. If you buy huge quantities you can cut these costs down a little.
Grouse