Delivery and taxes are the smallest of all problems. When you bring devices into general circulation you have to follow the law for these devices on local groun

Delivery and taxes are the smallest of all problems. When you bring devices into general circulation you have to follow the law for these devices on local grounds. Trading partners can indeed do the necessary qualifications for that, but it is the same bells and whistles. You can avoid it secretly (aka. Pay a courier and hope that the customs officer does not check the certifications on the product). If you as a user use it and the product behaves badly you can get seriously fined (e.g. disturbance of the radio spectrum). It is costly, very time consuming (think months to years) and very risky (the authorities often reject things and you need to go back to the drawing board) to do it the official way.