Probably a week ago - a 3 license of Kaspersky Pure 2012 for $7.
That's about the only software I buy on a yearly basis, other than Steam sales that just kill me, but $7.50 for Borderlands GOTY is hardly a HUGE expense.
Otherwise, I usually get games as Xmas gifts, so I'm proud to say I have never pirated any game software. Pay 'em, they deserve it.
Intel i5 2500K@4.3, Gigabyte Z68XP-UD3-iSSD, Powercolor PCS+ 290x 4GB, 2TB Hitachi HDD, Thermaltake Level 10 GT Snow Ed, Corsair H80, Win 7 Pro