UK iTMS Violating EU Competition Rules?

The BBC reports that the UK Consumers' Association is looking into allegations that prices are higher for the UK localization of the iTMS than they are for either the French or German localizations. The group has written to the Office of Fair Trading to investigate a 20% higher rate per downloaded track in the UK compared to either of the other two stores.

Apple has defended their UK pricing policy, stating that the underlying economic model in each country has an impact on cost-per-track for each localization. The comparison shouldn't be made between each localization of the store, but instead should be made to other per-track download options available in the UK.