One of the versions of Altium has the key broken and is for sale. ( not through Altium)
Any time you see a $10,000 program for $3.00 with no support you know it is a copy.
I could get Windows for $3.00. With no upgrades.
Micro Soft Office (old version, no support, no upgrades) Not from Micro Soft.
You can search for this on the internet but I almost guarantee you will get a virus.
I was at the MIT swapfest last summer and someone was trying to sell copies of Windows 7 for $10. They were on CD-R discs. Obviously not legitimate and very illegal.
Even worse considering Microsoft have made iso's of their current operating systems available to download from their website. You still need a license key of course.