Actually it looks like I simply missed it description was below(I didn't scroll)

Base Model $499:

    Everything you need to print - just add a computer!
    Acrylic Build Plaform - good for doing small prints
    70W power supply
    Open design (no outer cover/door)

Pro Model $549:

    Heated Build Platform - allows you to build large prints up to 6x6x6" without bottom warping. 1/8" aluminum plate.
    Upgraded power supply
    Spool holder to hold filament (makes unattended printing much easier)
    Interior lighting
    Open design (no outer cover/door)

Expert Model $599:

    All the features of the Pro model plus an outer cover & front acrylic door to give your printer a finished look with clean lines