$20        YuSynth Transistor Filter PCB
 
$45        Component Kit (includes 3 SSM2210 for matched pairs)
Designed by Yves Usson.
See the project page here.
R1 and R2 are replaced with ferrite beads.
SSM2210 fit for the matched pairs. Simply clip the bottom two legs, and install the 22nF caps on the bottom side of the PCB!