zzounds: Bass OD Pedal for $19.99
 

http://www.zzounds.com/item--CSTCRBOD

CastleRock Bass Overdrive Pedal
With individual gain controls for overdrive on high and low frequencies, this pedal lets you dial in just the right kind of growl for your bass sound.
$19.99 was $34.95

I ordered this on Friday and somehow got the package over the weekend, I didn't even notice it until last night. I only had a couple of minutes to mess around with it, my impressions so far is that it is a copy of the Boss Bass Overdrive. The description says individual gain controls for high/low, but they really just seem like EQ to me. The overdrive itself is the same kind of fuzzy/buzzy sound the ODB-3 has. I won't have more time to mess around with it until later in the week, but its not bad for $20 if that's the sound you're after.