Some Pre-purchase questions

Is Linux installed or can it be? If yes can I install apps developed with Android IDE installing of course the current Android OS onto Lattepanda?

I would like to use a smaller display than 7" ( 2.8" or 4.8" ) Is this possible?

If I develop a product around the Lattepanda is the price significantly lower than $109 in, for example, 1000 qty?

Thanks,

Ken
MBR Aquatics