Based only on my personal experience, I would mention a couple things to keep in mind:
1) I'm a recent seller of one, which was a roller with recent driver quality paint and floors that were pretty decent to begin with, but had been repaired, and had very nice frame rails. A potential buyer presented me with a copy of an Old Cars Price Guide, which suggested a fully restored one (non-max wedge) was worth less than $10K. So you have those who are thinking Barret-Jackson pricing on anything old vs those who refer to a price guide which appears to be slightly out of touch. As a buyer, you could try the price guide approach, which showed what I think were dirt cheap prices for the 62's.
2) You probably know this, but just in case: Watch for cowl rust, trunk lid rust and door rust. Trunk lids are very hard to find, and very hard to repair. Doors are just as hard to find, but not quite as hard to repair. Hoods can have similar problems, but don't seem as hard to find. Cowl rust, not much fun.
3) Side trim for Savoy's I've found to be very hard to find. The more complete the trim is the better off you are.
4) Front bench seats are tough to find, should you be thinking of a stock style interior. Nice outer head light trim rings are tough to find.
5) The steel shells for the interior door panels, particularly the rear ones, are tough to find.
6) Nothing wrong with 413's. In fact I started using them years ago because everyone was looking for 426 blocks. From a value point of view though, a run of the mill 413 does not carry much value. You can still buy a running 413 for under $500 without much trouble. I bought a very low mile motor home 413 for $200.00. Of course I had to toss the heads, intake, water pump setup, etc, but still got a really clean 413 short block on the cheap. Closed chamber heads with compensate for the pistons on a street engine ok.
