It's a very nice knife, though I think the G10 version sells a bit high for what it is, but the LW models are on point. I think the S110v version is a better fit for the knife and roughly the same price, though a LW model. It is one of the best backlocks on the market, consistently. Very good F&F from the 4 I've had, 3 LW's and 1 G10 that now has micarta.
I'm not sure why the PM2 SHOULD sell for more, or the same, in your opinion. I don't think it's a better knife, though far from bad. There could be the economies of scale going on but I think both are some of Spyderco's top selling models, and are kind of their gateway drug.