WTB 15T cog

Im looking for a 15T cog.just something cheap that will get the job done. I may end up getting one at the lbs, but I thought I would check here first. Ill be at the track the next three thursdays for the beginners class.

Thanks
Chad

Road or track chain (3/32" or

Road or track chain (3/32" or 1/8")?

Not that I have one to sell, but that's useful information :)

Also, I recommend avoiding the cheap route. Even "expensive" ones like the Dura-Ace cog aren't super expensive and it's worth the money. I bought a cheap stamped steel one and the first time I sprinted on it, I stripped out the cog and the hub.

A new wheelset later, and I wish I had spent the extra $10 on the DA cog.

And I'm not a terribly big guy...

Tim