Gacrothers

I purchased a 2017 22r Minnie Winnie and wanted to have a spare tire. One did not come with the RV.
I replaced the tires and Purchased a rim that would supposedly fit on my ford chassis. Well of course I had a flat and the spare would not fit. I called all over trying to find the right rim. I even called a ford dealer to see how much a spare rim would cost. They asked for my vin # and told me it would cost $450.00. So was wondering what other people have done for a spare rim?