Do not forget that in Europe we have the pleasure to have a ~20% VAT + shipping costs + importation costs added to each purchase.
This makes more or less the price you see on chain reaction, or other euro shops.
However for bigger parts, due to the current weak dollar against the EUR, it may make sense.
For instance my lefty fork, was 200 EUR in total cheaper from the US, than bike24.com in Germany.
Oh, those bars are a little pricey compared to the ones I got from XMiplay, but they are nice quality.