$8 with free shipping from Best Buy if it comes back in stock. Your local Best Buy should price match. So will Target.
There is GameRanger: http://www.gameranger.com/
There are quite a bit of people who play on it. Also, I'm not entirely sure what you mean by LAN games. Do you mean it simulates a LAN lobby? GameRanger works just like that.
Best options are:
Warkeys
AHK (AutoHotKey.com)
or edit the War3Preferences.txt already in the WC3 folder.
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FWIW I recommend AHK, once its set up its global, and won't need any re-modification after new blizz patches or anything like that, but they all work well.