Ohh oui, my experience the past yeaérs was similar:
in Belgium, very cheap shipping costs from England and from Germany, reasonnable from the USA, very expensive from Italy and France (ou neighbours) ...
But today rules have indeed changed, price up from Germany (except some nice and professional sellers, like Jupiter Min.), exploding from the USA, and also more expensive from the UK.
But no tax except from the USA since recently.
But we are all very bad, poor buyers actually !!!! Why are we air shipping flats of 1 to few € or $ or £ and soring them as grey armies in our own cartons for years atfer .... when we are burning stupidely crude oil and Carbon back and forth for thousand miles away, instead of buying from local sellers and inventories, even if we had to wait a couple of weeks o months more

? What other animal on earth is doing this?
An efficient buyer let his purhcases be shipped quarterly or less, bu surface and post , not by rocket most expensive private servicing... and we should perhaps buy these flat by the weight as bulk products.... (they are most of time even unpainted)....
I use to buy from Benedikt Widmann regularly flats, pay him monthly the value, and let him bring the consolidated box at a show several weeks or months later and grouped ... I assure you, it is cheap and I paint other flats in the mean time.....