By how many times has the money expended on missions to fix Hubble already exceeded the cost of building and launching a new and incrementally better Hubble? D

By how many times has the money expended on missions to fix Hubble already exceeded the cost of building and launching a new and incrementally better Hubble? Development cost for additional Hubbles would be close to nil, so cost would be only reproducing it. Presumably we don't need very many functional Hubbles, although competition for time on it probably is not slacking any.