im not comfortable doing orders over the net

This is exactly the time to try out internet, as its only a sprocket, not a whole bike.

But as someone said, try a wanted ad, here on nsr-world, many people have stuff like that lying around, f.ex. if they bought some specials. if youre really tight on money you might even get a used, most of us change way before the teeth are breaking off
Some of the racers might have some not to heavily used, but specify what you need: rear or front, how many teeth ?

PS: I've bought a lot of stuff from tyga-performance, which is run by guys very well known on this board and trustworthy.
at least in business, in the Thailand nightlife, I can't say
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom