Fuel savings and the cost of the same should never be a issue unless you want to put 200 miles on a tank. Even the worst milage I have seen is around 32 mpg. Considering I can only get around 12 on average with my truck and only 8 when I pulling the 5th wheel, I think my bike toy milage is fantastic! Considering the money we all spend on our bikes for accessories, do-dads and modifications what we pay for fuel is a no brainer. For me personally, fuel is my cheapest investment so far.
"You wanna play, ya gotta pay"! "In for a penny, in for a pound"!