There's a good couple of people who want a bolt-on fixed wheel here in Hungary, so it seems we'll do a group drill thing. The father of a forum member has a big machine shop so it'll be cheap and professionally done.

I may or may not be able to slip a few cogs in for anyone who is interested. So, if you want an ISO cog, drop me a PM or post here. I think I'll only do one shipment even if there are several interested US peeps so you'll have to distribute them among yourselves.
Cogs are likely to be Shimano DX or any SS cassette cogs we can find. Supply is unreliable to say the least, so the plan may fail completely. Also, the machine shop man may only be willing to do two or three... for us personally.

The whole thing is far from a done deal and we'd still need to look into shipping costs, customs (?) and such. (I'm not sure if we should use the good ol' postal service. Around here, I hear they have a habit of "damaging" and "losing" interesting-looking packages. A bunch of cogs isn't that hot but they aren't too bright so God knows what they will make of the box. UPS or other shipping firms are safer.) You could more than likely paypal me (a friend of mine, actually) the price of the cogs. This is really just a preliminary inquiry to se if there's interest. Price would almost certainly be under $10 apiece, plus the shipping cost.