Speaking only of DD games,
The Witcher Enhanced Edition and
Oh...Sir!! The Insult Simulator are the only ones I've purchased with no discount.
Most games I don't care enough about playing to buy full price. And my options are severely and increasingly limited anyway, thanks to my aging laptop being my only computer. Also, there are better things I could do with my limited money.
One that I might consider paying full price for (we'll see after it eventually comes out) is
Spelunky 2. I got the GOG version of the first one for free, and only got around to trying it six months later, and it is now among my all-time favorite games. I still play it almost daily. So, yeah.
Assuming it comes to a platform I have/use (e.g., not Steam), and whatever my computer is when the game comes out (probably still this one) can run it, and I am not ridiculously broke, and it doesn't inexplicably cost $30, and it doesn't turn out to be a turd...there is a very good chance Mossmouth will be seeing my money sooner rather than later, not to mention seeing more of it than would commonly be the case.
krugos2: Well, when I purchased Titan Quest and Kingdom Rush I was new to buying games online and I didn't know sales were such a frequent event, lol. I would have waited to get Titan Quest at a discount, had I known better. I don't regret paying full price for Kingdom Rush, though, some time later I was happy to get the sequel again for full price, by then I was already aware of how often games go on sale here.
This was sort of the case for me with
The Witcher. (I had actually been looking for a DRM-free copy of
Morrowind: GOTYE -- which wasn't here yet -- but struck out, so I kind of "settled" for
The Witcher, which was also a semi-modern [albeit
years newer], dialogue-heavy, action-oriented RPG that my then-new laptop could run). I'd say I've easily gotten my ten bucks' worth from it...but had I known how frequent and steep the discounts were, I totally would've waited and maybe gotten something else just then.
I don't even slightly regret the two dollars I spent on
Oh...Sir!! I bought it on a Christmas Eve as something to potentially play with family, and it would up serving that purpose, and it was fun solo, too.