If that's a true Metropolitan and not a Centurion that's actually a pretty rare truck. Metropolitan made almost strictly 1/2 Ton stretched frame conversions with only a few 1 tons, whereas Centurion made a mix of both 1/2 and 1 ton, and produced several. Centurion's are rare enough, but a Metropolitan had a quarter of the production that Centurion had. (AFAIK)
Biggest issue aside from typical Ford corrosion is the roof lines. 90% of the conversions on the market need roof repair or have already had it done.
$5k is a decent starting price
I've looked forever to find an '84-'86 Centurion