I mean... I'm just going off what the tech in the service department told me and I do know that when the replacement kits were in stock that they would sell for around $600-$750 or so. That $2,500 subtracted from $600-$750 would be between $1,750-$,1900 remaining, of which I just looked at Jacobsen's website and it appears they charge $175/hr for labor. Which would make for roughly 10-11 hours of labor to get to that $2,500 figure? Aka, that seems quite reasonable to me, even maybe a bit on the longer side? I watched a couple of videos of the process on YouTube and with the exception of, I believe a few tools and a press that I don't have, it looked like something that I could've done myself, if I actually needed to and if the kits were in stock. Fortunately it's something at this point that I don't need to worry about, though that could obviously change in the future, knock on wood. But I've done a few different engine swaps on my mustang before by myself as well as a multitude of other things and with the exception of the tools mentioned above, the rest sounds quite doable. $5k imo is rather absurd because even if the kits were say $1k per motor and the guy is charging $200/hr for labor, that's 20 hours of labor to do the swap. For the life of me, I can't imagine it would take a certified Yamaha tech anywhere near 20 hours to do something like that.