I bought into the first three or four (?) sets. With an eye towards actual collectibility I bought singles from one or two reputable aftermarket minis sites to make sure the sets were complete. I never had any intention of using them for anything but D&D RPG play. Having reached a total of 1120 WotC minis I stopped buying them because with the possible exceptions of a few unique monsters here and there I had no further need to continue the quite considerable investment.
I haven't bought any individual minis since then though I've looked a few times. Since I play D&D a LOT less than when I started buying them, and also have had less disposable income, it has not seemed worth the expenditure to buy minis I'm less than likely to put to use in the forseeable future. Only now, after making the last payment on my truck is that likely to change, but cost vs. possible RPG use is THE primary factor in my own buying decisions here. That doesn't mean there is a hard cutoff of MSRP as it's entirely relative to their anticipated RPG application. It does mean that my purchases of WotC minis will be entirely aftermarket as I have all the unneeded and miscellaneous bulk minis I can stomach.
