One problem for consumer goods production in europe / US is component sourcing. You will need a PCB-Fab, ICs, injection molding, ... . While you can get most (some things just arent built statesside anymore) of those things in the states, they will be more expensive and maybe not built to capacity (since they specialized on really small batches for example). In china you will have all of the suppliers down the road and pretty cheap.
From someone who worked for a large automotive supplier, which does a lot of manufacturing here in germany, that wanted to release a consumer device I heard that you can get the whole product finished in china for the price of sourcing the components in europe.
From someone who worked for a large automotive supplier, which does a lot of manufacturing here in germany, that wanted to release a consumer device I heard that you can get the whole product finished in china for the price of sourcing the components in europe.