Free? Yep, Free. Get a feel for the "Reaction System" that makes Two Hour Wargames what they are without commiting any hard earned cash. If you don't like 'em, No loss, right?
What's more, they're still fully supported on the Yahoo! group, so ask all the questions you need to and there's a number of (also free!) expansions available.
No reason not to take a look then, eh?