I don't know what they usually sell for, but 30mil does sound quite high to me. I figure if you use it with GGS, you could maybe, best case scenario, get 3 gains at 100+ Taming (where anyone sensible would use it)...that's 1.5 points of Taming, tops -- you can get a guaranteed 1.5 taming worth of SoTs for 15mil or less (on Chessy, closer to 10mil), so yeah, 30 seems way high.