One of our fine sponsors, MachV, have it for $49:
http://machv.com/motpowbleed.html
Their P/N is 00432, Motive's is 0251 (because you'd never want to use a manufacturer's part number when you can make up one of your own).
http://www.motiveproducts.com/02bleeders.html
Why the hell didn't we have these thirty years ago.