willietrom: My personal dislike for this sale is that it's supposed to give you games that you don't own, but GOG provides no way for you to let it know which games you own elsewhere, and so this second round has been four games I don't own at all, seven games I own but not through GOG, and all of which I haven't been willing to purchase at their previous sale prices. My expected price for even just a game I don't already own, then, is over $5, for games that have nearly all been on sale at some point for $5 or less.
The first round went pretty much the same way (apparently with some of the games I actually didn't own even selling out by the time I got to them), and I can't help but expect the next to do so as well.
As long as GOG is unwilling to let us register ownership for games owned outside of GOG, and as long a they have a policy of not letting us know that they will eventually sell games that they don't sell at launch (leading us to buy those games elsewhere), then this type of sale will never be a good idea to participate in, I think.
So, in essence, you're blaming GOG for not being omniscient?
They don't necessarily know which games they'll be able to sell in the future, or which games you happen to have in your current possession.
If you actually know that GOG has no way of divining such information, then you only have yourself to blame if you enter what is, essentially, a "pot luck" sale.
And don't say that they should give you a way to register games owned from other places -- as yet, I haven't seen anyone do that, so I wouldn't be too quick to blame GOG.