I bought 40 acres of mature cedar swamp in the Upper Penninsula of Michigan back in '97 for $20,000. A few observations: You are quite right to consider an economic collapse, but even more important are these very, very high prices for acreage can not be sustained in the face of the changing weather conditions, and more importantly, the high price of fuel.
I am positive, most of the farmers are making more, but keeping less because of the high fuel and fuel-related input costs. Most of the owners of large houses in the countryside are being squeezed by the rising cost of transportation fuel, the rising cost of countryside electricity, and with the exception of natural gas, the rising cost of heating fuels.
What is left are those that own woodlots. My 40 acres is 114 miles away and the cost of driving my truck there is beginning to have an effect. Worse yet, the surrounding territory has since been chopped up and sold to others like me who put up a camp and hunt. More hunters equals less deer. This fact shows up clearly in the trail camera pics taken over the last decade.
On the positive side, my camp is close to a very wet marshy public area, and the dry conditions had me way back in there (adapting to conditions as it were), where I shot a seven point buck with my bow!
Good luck with your decision!
Living in the great outdoors we call Earth!