I have been close to buying some a couple of times, but so far resisted. In Europe they are at least +50% more expensive, and it's difficult to buy them from the secondary market (because all the serious websites are in US).
You sound to me like you may have a similar feeling as me, tell me if thiese are true for you:
- I'd want to buy about 20 (let's say 5-6 choices for current PCs + about 15 monsters)
- I'd use them in RPG only, as I care nothing for the mini game itself
- I'd be glad to spend up to 30$
- In no way I'd buy them random (so secondary market is mandatory)
- If I liked the first "batch", I'd probably buy another 20 after a couple of months, and then again...
Now what's really prevented me to buy them at the end is that I live in EU. Buying them from a US website (while it has some small advantage with the currency) means to be affected by (1) surprise high shipping costs, (2) possible tax fees, (3) security risks with credit card.
Buf if you're in US you have none of these problems, and you can easily buy those above for that price, if you don't buy rares: many uncommons and some commons (at least in sets from GoL towards) have the same quality of rares for much lower prices. If you really really love 2-3 rares you can buy too them even if they're more costly than good metal minis.
Another problem I have is with Large figures. In RPG it is extremely unlikely NOT to meet big monsters in every adventure (Ogres, Giants, and of course Dragons), however almost all these are Rares and are among the most expensive of the rares - unless you want a Destrachan

For example, in many mid-level adventures I'd like to have 3-4 Ogres at the same time (ok, there's the new Ogre in the next set, but it totally sucks).
Rather than spending 10$ for a
large rare creature, consider spending 5$ for a
huge uncommon!
Eventually there was a guy 3 weeks ago making a marketing survey on these forums. His company was planning to make minis very similar to the WotC ones (except that they weren't linked to the skirmish game at all, just figures), pre-painted low-price plastic, only not randomize. That would at least make large figures very cheap, or force WotC to release more large uncommons.
Mercule said:
I don't mind throwing down $20 on a double-handful of minis that'll actually see use, but I'm not sure what the odds of that are -- what with the randomized content and all.