Should this be allowed? Should property tax be able to jump this much in one year?

Happens all the time around here.  Someone wants more money, so they jack up fees, taxes, prices, (etc.) to get it - and "we" have to pay. 
Some is justifiable, but most comes from greed. 

I agree that this is a huge increase, but it comports with a law enacted in 2007, but not implemented, so it isn't as though land owners didn't know it might come into effect one day.  This woman owns 93 acres of timber land.  Do you really think that this much acreage should only pay $750 a year?