Many Europeans, especially the Germans, have claimed (and rightly so, I think!) that the Euro has increased prices on all, not just on imported, goods/services! Lots of middle-aged to older Germans with whom I've spoken of late, actually prefer a return to the D-Mark.
Do you know why?
People claimed that the Euro increased prices because they (wrongly) counted 1 Euro = 2DM. It's actually 1.95something - so they were losing 0.05DM on every Euro that they thought they had. The same problem existed in France, where it was traditional to tip 10FF to Parisen waiters. People then started tipping 1 Euro instead - which was only 6.5something Francs.
The evidence has shown that the price increases were pretty much statistically insignificant - and later conversions to the Euro such as the Estonian Kroon and the Slovak Koruna kept dual pricing for a while afterwards to discourage any attempt at profiteering.
If you understand economics, have a look here - ijcb.org/journal/ijcb07q4a1.pdf- it shows that the actual Italian inflation (which was perceived to be astronomical) was within 0.5% of the official rate, or within the margin of error for the statistics in question.