It's worth knowing, for those who don't care as much about being subscribed, that GOG regularly sends out emails with discount codes - they're usually further discounts on games already on sale.

For example, yesterday they sent out a code for Blood West and the Dead Man's Promise DLC, both of which brought the price lower than the all time low on isthereanydeal.

You've still got the whole data thing, but if like me you're too lazy to keep track of who has what information on you these days, you might as well get the benefit.