just online looking at flights for my big 20th trip
cheapest option looks to be flying to eindhoven. ive done this before, and got the train up to Amsterdam. but off the top of my head i cant remember the price of the train ticket.
have u ever tried interrail ticket?i think its one of the best option,but it depends how long u wanna stay there..for example i always buy 5 days pass for 150euro,but its good for everything within the period...u can have trips anytime if u want to anywhere...