Get Age of Wonders Trilogy on Impulse.
It's 3 games plus the soundtrack of each one, is cheaper than here and most important, the service was never put down on a childish whim. That greatly compensate the fact that here is drm free.

Well, if you make a backup in Impulse, it's just a .7z (7-zip) archive, with your username as the password. So that backup is sort of DRM-free. But dealing with the Impulse client is still a pain, and the whole experience just isn't as slick as GOG's installers and web downloads.

Sure, GOG may not be as serious about being a download service as we would prefer, they seem to assume being DRM-free lessens the need for "download forever," but once it hits a sale price the overall cost should be more in line with the service they provide. And then you'll get a slightly better product at a similar price. And it's not like you haven't already waited for this game, so what's a little longer.

The soundtracks seem like a nice bonus, but at least for the first AoW it's not really necessary. It looks nice on paper, but the files are accessible in the Songs directory of the installed game.

The price difference may be significant for some people, though. Since I've not played the other games I don't know how good they are. All I knew is that I loved the AoW demo back when I used to play it (over and over and over) and so I sprang on that like a puma on a gazelle (if that even happens in real life... not sure).

Don't let the music gap cloud the assessment. I wonder if GOG is aware of this and might try for a bundle promotion to compete when they issue the other two games, since the price difference is not easy to ignore.

Impulse is a disaster area. I'm willing to pay a little more for GOG's superior product.

As has already been mentioned, the audio files are easily copied from the game.

In the second and third installment, you could even put in your own mp3 files and play them that way.
The "bonus" of getting mp3 soundtracks is no such thing. It saves you a copy command at most. ;)

You're right, but it's not the same product. Retail, Steam, GOG - you get something a little different everywhere you go. With GOG, I get a simple, hassle-free standalone executable. With Impulse, I get a pain in the ass, thanks to the ridiculous installation and backup process. I will happily pay a few extra dollars to eliminate the hassle.

The Witcher was the first game I bought on Impulse, and I bought it there because it was $10 cheaper than retail. I regret that purchase very much - I should have paid full price for the box or the Gamersgate release. Now, I only use Impulse for $2-3 purchases that I don't care about keeping.

If I ever want to play The Witcher again, I'll probably just buy it again from another service.