A Gixxer 600, or any crotch rocket for that matter isn't a "reasonable" bike, so I doubt you'll find one at a reasonable price!
Still, if you're from Lahore then there's a fellow in Allama Iqbal Town who is selling an early 2000s Hayabusa for 650k. P.M me for details. Fairly reasonable price for a 1.3L behemoth, I'd say!