Dude, you should have gotten it from german ebay, rather than some overpriced french store... sry.
but check out this ebay link
KOSO TACHO RX1N DIGITAL GP Tacho, Drehzahlm. Quad + ABE bei eBay.de: Quad-Teile (endet 03.04.08 10:28:58 MESZ)
in stores you find it from 168€ i think...
alex