I am amazed at the continual intent by consumers to "pass the buck" for poor decisions they've made--especially with regard to real estate. It doesn't take a rocket scientist (or experience with Michigan real estate in particular) to know that property taxes are based upon VALUE. They are not (at least, ideally) predicated upon some distant factor unrelated to value. Did you blame the cashier when you checked out with your $1000 LCD TV at Sams Club that you were also charged 6% sales tax? Seems to me you should have the common sense to know that the current property tax amount would adjust upon the resale of the property and a revision in the market value (which of course would trickle down to the State Equalized Value and Taxable Value) and that the dollar amount would certainly change upon the recording of a new transaction and consequential sales price and that the new price would somehow have a bearing on adjusting the property tax amount.
You should consider yourself fortunate that you enjoyed whatever "depressed" property tax amount was in place when you purchased the property, at least for the balance of that tax year.