no joke, the 1 helicoil kit I bought for another vehicle, cost me $30. the dealer said "depending upon how complicated it is, it could take 1 to 1.5 hrs"
I think the job could be done in 5-15 mins
This is the kit i got off this seller. I already had the drill bit. lots of permanent locktite when installing and use a pair of skinny needle nosed pliers to snap the little tab off and pull out.