Alright /trv/ i come here for your expertise, I'm going to be going to Europe for a couple of weeks, I've decided I'm going to land in London (from Toronto,Canada) and go to Paris. Those are for sure, from there me and the two people I'm going with also want to go to Amsterdam Berlin and Rome. However looking over prices (train prices especially) it seems like a train from Paris to Amsterdam then Berlin will be in the range of 250.00-350.00 a person. Is there any cheaper way to travel? how is inter EU flights or even rental cars? Berlin to Rome i found tickets for 50-100$ so ive decided to go with that.

Cheap travel is the goal, the hotels and food and such price doesn't matter much so i wont worry about those but whats the cheapest way to travel over there? European help would be most welcome.