Just been reading about this. We are going to Spain for two weeks (AI, I think this is relevant but can't find anything about it!) for 14 nights. 2 adults, two kids. €6328 for two weeks.
We won't spend anywhere near hat, probably a couple of K max.
We could prove it with credit cards, but apparently online accounts aren't enough and the Spanish are asking for Travellers cheques or cash. What if you get paid halfway through the holiday? Do kids have to €113 a day too?
All seems a bit bonkers.