Loaded 2013 M3 = $73k
ESS 650 S/C kit = $14k (w/ a discounted - free install at that level)
TOTAL = $87k
So I'm thinking, let's say I'm off on price just by a tad for a new S/C'd car, then I'd rather pay a $3-5k premium to get something brand spanking new w/ a fully known history. $84k is too much for '11 M3 with those mods.
But hey, GLWS, you know what they say...one is born every minute.