WTB: Extension tubes that meter and AF for Nikon

[JonA_CT]

Like the title says...

I'm looking to try out some extension tubes with my 85mm lens...I know that they aren't that expensive, but I figured I'd see if anyone wanted to make a few bucks on some gear they don't use.

Thanks!

 

[KmH]

Vello makes a 3 tube set that's reasonably priced:
Vello Auto Extension Tube Set for Nikon

 

[tirediron]

I use Kenko; they work flawlessly.