Just noticed this:
The Aluminum Kit consists of the following aluminum parts: (4) C-Channel CHAN-121-25, (1) C-Channel CHAN-151-25, (2) Flat Plate PLATE-5-25, (1) Medium Chassis Kit CHASSIS-25x25x2, (4) Bar 1x25 BAR-25
Price: $99.99
The parts are competition legal. According to my calculations if these items were purchased seperately in their normal non-aluminum version it would total $52.88. As far as I can tell only the parts in this kit are available in aluminum, and they state "Aluminum parts are available only as a kit and are not sold individually." I'm happy they've introduced lighter weight parts, but upset they're done so in such a restricted manner. A large size chassis made of aluminum would be nice.