Re: Trip to the Home Improvement Store
First, I would recommend plywood over OSB. Plywood will look and finish better and will hold up better in a damp/wet environment where OSB will swell. An added bonus will be that when you want to hang something the plywood will take a nail or screw much better and more easily than OSB.
As to the expense, because they can. Even with the collapse of the housing industry and financial structure of the country, material prices have not come down.Typically, material pricing does fluctuate as supply and demand dictates. Until the economy, lending, and housing market stabilize, you can look forward to continued high prices.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!