I don't have prices for 1982 but in 1984 it was $529 US. Hopefully Jim can narrow it down but my guess would be about $499 US.

In 1982 there was no PX10, only the PXN10 which used a clincher wheelset that was responsible for most of the weight difference. It was advertised at 22.7 lbs versus 21 lbs for the tubular equipped PSV10. The top model was the tubular equipped Pro 10 at 21 lbs.

In general, the Vitus models were lower ranked and priced that their counterparts with roughly equivalent Reynolds tubesets. The Reynolds models generally featured some upgrading on many of the components.