I don't have any personal experience with TAV but I did consider them for some work on my 4Runner once. As with you, their quote was well on the high side. I know they do a lot of good builds for YT and IG and recommended them to a buddy of mine in ABQ. He has a Jeep Gladiator he wanted some work done on. Basically a full build with an Alu-Cab Canopy Camper, interior build out, drivetrain work, suspension, armor etc etc the whole 9 yards. I guesstimate that my buddy had a quote of $60-$70k for parts and labor and paid a handsome deposit. That was a year ago and ZERO work has been done. A lot of "supply chain" excuses, stringing along, and saying certain parts are in and then saying they actually didn't have them and can't/won't work on it until everything is there. Basically getting a lot of runaround which is odd given how much IG they do and how they focus on celebrity builds. At this point I can't and won't recommend TAV given my friends experience with them.