Orcad 17.4 for Windows is Win10 64-bit only, I think release 17.2 might have run on Win7,8.
Linux version is RedHat only, might be 64-bit but it's good to see that Linux support.
Pricing is about $3.5k for the USA or £3.5k if you live in the UK, not sure why exchange rates don't come into play but Orcad has been at this sort of price level for quite a while, Orcad 9 cost me £3.5k nearly 20 years ago.