On another thread here at SHF someone reported that Def Leppard spent 4 years and $4.5 million making "Hysteria". I recall reading about Tears For Fears allegedly having spent an enormous sum on "The Seeds of Love" in 1989 (that also took about 4 years). I suspect Michael Jackson spent a fortune on his Thriller followup "Bad" with all that pressure. Anyone know what the most expensive album project was? One of these I listed or something else?