This game is currently being sold on Steam for $20 and has a lot of DLC that can run up the total considerably. However, save your money because this game is a complete and total ripoff of Panzer General (available for free download here: http://www.pgforever.info/).
PC does have some updated graphics and it adds a little flavor by having units awarded citations which can also increase their stats a little. However, PC has a very limited set of scenarios (others are part of the DLC) compared to PG.
After reading through the Matrix games site, I can't see a single game that isn't a ripoff of an older game. Either these guys have purchased a lot of licenses, or they're flirting with some copyright infringement.