Apparently GameTap is now a bit more welcoming to those outside the US, and I can at least poke at their free game sections. Without even having to register an account, so far. Which means I can download Sacred and play it with only whatever evil they insert into their free games (are there ads? I dunno yet) for the next five days. By which time the GOG sale will be over... But, as I said, not a huge savings anyway.
Enh, if the game is reasonably cool on testing, I may as well buy it and add it to my stack... The trials and tribulations of game research!