I bid on 36 acres of park district this spring, 1250 per week, bi weekly trimming and sidewalk edging. There were 7 bids total, 1705 was the highest, the lowest was 675. Next lowest was 1150. I had a hard time swallowing the 1250 a week that I bid, but I did and got low balled badly. Hope this helps.
That's funny that areas like this have come up so frequently on these sites, lately. Around here, any larger acreage goes for 20 bucks per acre. Oarks, schools, municipalities. It doesn't matter. For this particular one, 40 acres = $800..
Our local town put the high school yard up for bid last year and it is 40-50 acres all together. A guy came in and got it for $600 and from what I heard the next highest bid was around $1500. I talked to the superintendent and he indicated that they won't be using the same guy again this year because of shotty work. Generally you get what you pay for.