Very Cheap quick throttle

Not sure if anyone is looking for a quick and cheap mod but after helping a mate with some work on his Ninja 250 last night I discovered they have a 36.5mm throttle cam whereas the one on my ZXR750 is 32mm.

Not sure how much difference it makes in terms of reduced degree of throttle turn but it'd be finitely be better.

May be a cheaper option than the R1 throttle mod? Definitely won't be better/as great a reduction than the R6 throttle mod though.