cheap expression pedals?

does anyone know where to get cheap expression type pedals?

The Behringer FCV100 is the cheapest I’ve found.  25$ A POP.  It’s pretty solid too.  It can also be used as a stereo volume pedal with the flip of a switch.  I’m waiting on an order of 7 more of them.  What are you using them for?  I’m a guitarist sick of tweaking knobs with my toes.  

thanks for that..

i want to use one (or more) for midi control and i fancy making my own wah pedal too.. i like the idea of using pedals instead of knobs for some things too..  i found another company in the uk last night… http://www.bespeco.net/  could be good for the europeans.. expression pedals with 20k pot for £20 (30 euro)

best wishes

adam