Erik,
The City of Frisco purchased 390 acres just east of the subject this past winter for $61 Million. If my math is right, that's $3.50+ p.s.f. Jerry Jones of Cowboys fame has several tracts in the area, some very close by that received zoning from Ag to some very intense uses (no apartments, as one of the council members joked), and some in Prosper just across SH 380 in various stages of development. As Mike notes, this area is in hyper-drive right now, and though there is thousands of acres of undeveloped land all around, anything close to any major roads is $$$$$.
The PGA site is part of 2,500 acre ranch purchased by Hunt Realty not too long ago. I've seen what the developers say they're paying for the 592+/- acres, and I think it is $60 Million or $2.30 p.s.f. I suspect that Hunt is using this initial sale to kick-start their multi-use master plan, with subsequent sales of what was essentially poor farm land (saw a cotton field not far from there today) going for much more.
Mike,
Six months+ ago, when I started hearing the details (everyone was sworn to secrecy, but you know how that goes) from both sides, I became pessimistic. Word from the folks down in FL was that the Frisco deal was being shopped around and there was a strong preference for staying put if the local community would up their commitments. Even as recently two months ago when a friend told me he had it from the highest source that the deal was done, I still thought it was 50/50. My batting average is not as good as it used to be, just like my golf game.