Complex sentence: Charges are considerably higher for EEA residents roaming in Switzerland, and for Swiss residents in the EEA, especially on internet data, which vary, but are often around €3/MB (2014).
Split into simpler sentences: Charges are considerably higher for EEA residents roaming in Switzerland, and for Swiss residents in the EEA, especially on internet data. Rates vary, but are often around €3/MB (2014).