I have the opportunity to purchase Adobe Creative Suite 6 Design & Web Premium Mac version, can I crossgrade this to a PC version and at what cost
Hi David, that's a good question. Adobe is continuing to sell CS6 but not sure if a crossgrade is still possible...
You could try following the complete crossgrade procedure and see what happens. Please report back if it works – thanks!
(Just make absolutely sure that the CS6 you're buying is legitimate and not a scam, or all will be lost.)