just bear in mind that from launch to delivery (if it happens) is usually a minimum of 18 months for any 3d printer on crowd funding sites.

Given how many you can currently buy - I'd be looking at existing machines, just depends how long you want to wait I guess :-)

The bean does look interesting, very small build volume - but does come from proven printer company, so possible faster production process..
I guess it all boils down to how cheap they think affordable is :-)