Apart from the moral dimensions of this guy's actions, isn't there some kind of written agreement between Abandonia and the original publishers of the games offered here for downloading?
Usually there's an explicit paragraph permitting free personal use and forbidding commercial exploitation of the concerned object, something like the GNU licence for Linux and similar freeware.
It's definitely no nice feeling that the people here are putting in all this hard work for fans like us and some such a..hole is making a few fast bucks from that!
Apart from that, here's a whole lot of compliments to the Abandonia team from a newbie to these forums (but not to this site! I have looked by on occasion over the years - this is quite an improvement in the design!). Keep up the good work!

k:
EDIT: Hey, here's an idea which just might work: Why not add a line to the starting page and/or to the credits in each game, mentioning that the game is being offered for FREE download by Abandonia and forbidding charging for further distribution? I mean, it's like the colour 'tabbing' added to heating oil to prevent the cheaper fluid being misused in diesel engines... All one would have to do is to add the statement in such a way that it's not deletable in any simple manner!
What do the admins opine?