Garmin GPS 175

[cyclepro]

I've got my hands on a Garmin GPS 175 and by searching the net I found out that the memory cards containing the various charts will only be available until November of this year. Garmin already shows the 175 to have been discontinued.

E-bay search resulted in very little items available (no charts).

Does anyone know where I can find (used) memory cards for this unit? At this moment Garmin is still charging $99.00/card on average.

Jan