I've thought about this, and I've found a beginner set of tools somewhere online for around $550, a bit pricey but it's the cheapest I've found. The shop I used to work in was shared with a PDR guy, we shared the office and everything and often bounced work off of each other. During slow days I'd sit back and watch the PDR guy do his work, really it doesn't seem all that hard. If you have the proper tools and have an access point it takes nothing more than a keen eye (I'd assume most of us folks here have a keen eye) and a patient soul. If you think you can just "pop that out" think again, it takes a while to become good at the task but again if you have an access point and the patience to complete the task it's far from impossible. I've thought about trying my hand at it many, many times. We've got a couple wreck yards around here I could go practice at and I'm sure they'd have no problem with that.
The amount of tools you can get your hands on is rediculous, they've got rods in every shape and size you can imagine, all have different tips on them too. If you can ever find a cheap set somewhere or can find something that works just as good I'd simply do what I said above, find a wrecker yard and go to town! :bigups