Inside the European Union, traveling to other places to buy things from there would only seldom be profitable, when considering the travel expenses.
On the other hand, I frequently buy things from online shops located in many of the EU countries, because very often for various kinds of things that I want to buy I find the best deals in different countries. There are no extra expenses but shipping, so it is frequent to order things from far away, because at a local shop near me they would be more expensive than buying from another country, even with the added shipping.