Stuff like maps etc should be in the public domain, for all to use. Sure there are costs involved in gathering the data and so on, but surely that can be offset in other ways . . .
I'm quite keen to get a copy of
Tumonz, which looks like a great tool (or plaything!).
That's probably worth the $100 or so they ask, but for one-off maps, it should be possible to get hold of one without giving away my first-born!