That's an awesome set! Some of the autos came from their ghostwriters via TTM (Chien Ming Wang, etc) and he probably got the biggies in person at signings, hence the COA stickers on the back. Still incredible!
Shoot I am only half done with my 05 Heritage set and there isn't enough money in the world for me to sell it now lol. Even if I never get another, 176/350 is pretty darn good up to this point! lol I can not imagine doing all that then selling it.