How much is the London-Paris Eurostar one-way?

pu1. Weekdays are cheaper than weekends

2017-10-26

OK

pu2. There is a huge price deviation. Sometimes it goes over 100 euros. It's better to live on weekdays if you don't care about the date

2017-10-26

OK

pu3. I think it's usually between 50 and 90 euros

2017-10-26

OK