The 4D Rulers Website has word that the licensing fees for the Amp II engine have been cut in half, presumably part of their recent fund raising effort. Word is: "We just cut ALL our prices in half, and upgraded the professional license package to allow unlimited users per project. So for $1000 bucks your whole team can use the engine and make a commercial game. Also, the upcoming 1.4 version has physics support, which users will be able to upgrade for free. 1.4 will also come with an extensive model and texture library, and our new max 7-8 plugin. Personal use licenses are just $99, perfect for hobby or casual use."