GoG has started it's
holiday sale with titles up to 50% off. This includes the Black Isle games just recently added like
Balder's Gate and
Planetscape Torment. The sale will go on for the next 21 days BUT the sales are switching out. Each developer's catalog is on sale for a limited time within that period. So if you are looking to complete that Black Isle collection, you will have to get it within the next six days, your Activison needs on the other hand will start in three.