去歐洲買歐洲火車證化算嗎?!

首先, 如果你有歐洲火車證, 基本上所有的列車你都可以坐, 不過快車同夜車就要補返差價同留位費. 與日本火車證不同... 咁究竟是否 "真係任坐", 就見仁見智. 假如你真係只坐慢車, 咁佢真係任你坐的.
至於抵唔抵, 亦需要視乎你去邊度. 如果你只去 1 - 2 個國家, 咁你大可以只買該 1 - 2 國的火車證, 這樣會較為化算. 如果你在歐洲穿州過省, 去返 1 - 2 個月, 咁樣歐洲火車證的確會節省不少的.
另外亦需要視乎地區, 例如意大利的火車費用一向較便宜, 用火車證就沒有什麼好處. 但如果在德國, 法國等火車費高昂的地區, 火車證的確節省不少.

It depends, but most probably it is more economical since single train tickets are expensive in Europe.

But first you should plan to use which type of eurail pass since there are so many types and combinations. You should choose the most suitable one (in terms of countries combination and no. of vaid days) so that the price will be the most economical.

You can check the types of eurail pass in travel agents or through respective web site.