Hmm, I paid quite a bit more for my steering stabilizer, its a Stabilus brand ,made in Germany it was AU$82 delivered.
Front Mbenz W202 R170 W124 W201 R129 W208 E300D CLK320 C280 Steering Damper | eBay

the Needswing Pulley kit was US$1100 + freight , imo it was well worth it . i havnt stopped smiling driving it.
btw, I could not source the supercharger oil locally so i got that from needswings too.