This baby finally arrived! It's been a lot of fun twisting knobs and discovering what it's capable of. The oscillator mixer is awesome. You can add as much or as little of each type of wave. You've got a sawtooth, square, triangle, a sub-oscillator, noise, and an audio in fader. Each of these have their own parameters that can be changed. The sub oscillator really beefs up the mix. You can choose whether it is a square or sine wave and whether it plays a note 1 or 2 octaves less than the octave you have the keyboard set to.
It doesn't have a sine wave available in the oscillator mixer, but I suppose you could play a sine from something else into the audio in fader and mix that in. There are a lot of other parameters that can be changed. You also get an LFO, and an arpeggiator. Together with the filter, there are an incredible amount of sounds you can create. I should add, it comes with preset cards that fit over the knobs and faders. They give you 10 of their own preset sounds and there are 5 blank cards which you can write on with dry erase marker and recall your own presets. It's a great synth.
I don't know what else to add without going on and on, so maybe if anyone has any questions I can answer those specifically rather than try to recreate the manual on here. If your question is, "should I get one?" I would say yes, you should.
Keep us posted though. I am all ready to pay the previously mentioned price if any remain in batch 1.