marled
It was not my attempt to say that the status before the EU was better (at least concerning trade). I just like to compare it to the U.S. and there it is really inferior for customers and small business, too many rules and taxes! The main advantage of the EU is for big business, just see shipping prices as example. There is not many folks in the EU buying things in other countries and this proves its benefit for simple people.
Shipping costs are largely related to the volume of business - economy of scale.
I guess you’re Swedish? If so you might be unaware of the UK’s network of small engineering businesses that supply parts and machinery and carry out sub-contract work for large companies across much of the EU, especially in the motor and aerospace industry. To give one of many examples.
And lots of individuals buy things from companies based in other EU member states or that are shipped from another member state. Much of what Amazon sells is now stored in warehouses across Europe, and can usually be delivered from e.g. Germany into e.g. the UK in 24-48 hours. Not without the customs union and single market they couldn’t.
That’s a large business, but I know quite a few musicians, artists, artisans and others who pretty much self-promote and sell their stuff across the EU.