Eglinton Crosstown LRT Science Centre Station Renamed to the Don Valley Station in Toronto. The video discusses the closing of the Ontario Science Centre and how much it would have costed to fix the roof vs. the cost of renaming the Eglinton LRT station from the Science Centre to the Don Valley Station at Don Mills and Eglinton Ave. in North York Toronto.
It is a word, referring to the accounting of cost. It probably would have been better to say “cost” but I’m not sure “costed” is being used wrong, especially if it’s discussing predicted costs.