Volvo Sat Nav Discs

[topsparks]

I have just bought a complete sat nav system for my wifes V70 volvo ( don't laugh it has 310 BHP which would put many Griff 500's to shame!).I have ordered a loom from volvo,but I need the DVD disks to go with it ,these are a tad expensive @£200 a set so I wondered if any one had a spare set or knew where to get hold of them cheaper,regards James.