If it makes you feel any better I just penciled out a deal with MB to lease a S63 AMG and the residual for a 3 yr lease was 42% which I calculated was a $500 depreciation every week over the life of the lease. Needless to say I passed on that plus the money factor worked out to almost 9%. OMG. Nice thing is they have 1.9% financing on all AMGs right now for buying and not leasing.
2006 E46 M3