Even the hoarded 215s are almost gone. Oil prices are up so tire prices are up. Bigger tires/wheels continue to gain in popularity and OEM spec. The days of bargain ST tires may be behind us - I'm shaving mine and treating them like race tires.
I'm still able to get a nice Falken 205/5015 street tire for my car for $52 ea.(DDD) so I don't feel too bad about annual carnage on those for keeping my SOLO alignment setup year round.
I ran well in GS last season with the MINIs but jumped ship for STS for '06. The difference from buying Kumho 710s and now some shaved 'Kooks didn't hurt me as much as some in the long term ST classes.
Now I have to learn how to drive on these gol dang squealy things! Trophied and got some contingency even5t #1 - we'll see!