If it runs its worth that much if its not ragged out and sorta clean. Look at the fluids/air filter to see if they where kept up. If all checks out, sell that clunker 660 (no offense lol) and add go fast goodies to the banshee.
More like hours than miles.. about 2hrs on heavy trails, hwy/city about 13-14. Try searching about baja or desert, a guy from UAE i think rode across a desert and averaged 14mpg.
PS: linky to the thread
http://bansheehq.com/forums/index.php?showtopic=103259&st=0&p=893343&hl=+fuel%20+mileage&fromsearch=1entry893343
$110 + shipping, gonna be upwards of 30 bucks to ship because its heavy.
Sorry about that, and no problem, if you need something else let me know i may have it laying around, i got small misc parts and stock suspension parts ect. thanks