The key question now is what they (who are "they?") evaluate the course at. From what I read, that was always the issue. The school district wanted to buy, the course owners were willing to sell, but they couldn't agree on price.
ETA: IMO government should have to pay considerably more than market when it takes property through eminent domain. For one thing, 'market value' is not that precise -- in the case Pat Mucci referred to there was something like a 400% difference of opinion about it -- and each sale can change and determine new market values.
More important, market value implies a functioning market. Eminent domain is the opposite of that. It's a forced sale. If government wants to force its will upon the citizens, and seize their property, it should have to pay extra for that.