Cross-border price differences have been a major point of public debate in Austria recently. Particularly supermarket prices are often up to 50% more expensive for the same item than in neighboring countries, even if the product has been produced in Austria by an Austrian company.

This shows that the EU still has a long way to sufficiently integrate its markets, despite free movement of goods having been established ages ago. Projects like this may help facilitate the transition to a more unified market.

>This shows that the EU still has a long way to sufficiently integrate its markets

Austria's high groceries price problem isn't due to a fault of EU market integration, it's due to the cartels that own the retail sector in Austria and milk consumers for all they're worth.

In other words it's a domestic self inflicted problem, that Austria can solve but chooses not to, not an EU problem.