A timeframe on the purchased/sold WMF vulnerability

The WMF vulnerability and how it got purchased/sold for $4000 was a major event during January, at least for me as for quite some time the industry was in the twilight zone by not going through a recently released report. But does this fact matters next to figuring out how to safeguard the security of your network/PC given the time it took the vendor to first, realize that it's real, than to