I have twice been on holiday with a mate who uses the Vodafone £3.00 per day roaming package. We use our mobiles for similar numbers of calls, texts and data usage. He paid Vodafone £24.00 for the pleasure (part days count as a day and 7 nights equals 8 days). I paid Virgin an extra £13.42 that month. Maybe that's why we don't have to say "Vorschprung durch technic".