The international flows of inputs can affect their unit prices. The research should find out, which input becomes more favourable thanks to internationalization. There are determined regression lines describing the impact of both international inputs on their costs just as their proportion. There was discovered a positive linear dependence by wages, their compensations and statutory social security contributions and a weak or non-linear correlation by remaining labour costs just as by cost of capital. But there are raised the relative labour costs to cost of capital.