Battleship:
Plain ol’ Battleship is boring, and I think most people realize that. The version offered here does provide a few new modes, but I don’t see why you should pay $10 for that. Instead, what you want to do is track down a copy of Sam & Max Hit the Road, the old adventure game for PC (MS-DOS) and Macs. It has a Battleship clone in it called Car Bomb, which is basically Battleship with a few cluster bombs and bomb-reflecting trampolines. On top of that, you get an excellent point and click adventure game.
Admittedly, you will need some way to run the game on modern computers. No problem, just pick up ScummVM ( http://scummvm.sourceforge.net/ ), there are versions of it for almost any OS you can think of. Just feed the original game’s data files into ScummVM and you’re good to go!
Cost: Varies. Online auction listings place it anywhere from a dollar to fifteen dollars depending on the original OS it was made for, condition of disc, etc. But it’s well worth it; you’ll get a fun Battleship clone and one of the best old-school adventures ever.
Scrabble: Aside from free browser-based alternatives, I couldn’t find too many cheap ways to pick up Scrabble or any clones of it. I’ll actually concede that this one, for the most part, has some merit, just not at the price point they’re asking. A few dollars less and it might be fine. As it is, you may be better off hitting up a yard sale and see if they have a used copy of the board game lying around.
Cost: Varies, and there’s a good chance the letter tiles will have been chewed on by a child.
The other games didn’t seem to be available at time of writing, and thus aren’t being covered.