Overnight train from Prague to Krakow

What site are you trying to use? We purchased our tickets from http://www.cd.cz/en/, they have the best price. You can only buy the discount tickets online, once they are sold out then you will need to purchase them on site. Our tickets were e-tickets, so no need to have tickets mailed. If you are looking to buy from a reseller, you will pay much more (such as raileurope.com). There are a limited number of discount tickets, if they are available, buy them. Keep in mind that the entire sleep car may sell out, our first choice was and we needed to book a day earlier.

There have been many posts on this topic, if you Google Prague to Krakow overnight train, you will find many posts. The Man in Seat 61 has great information - http://www.seat61.com/international-trains/trains-from-Prague.htm

Good luck

Thank you, Mike. Are you saying that on http://www.cd.cz/en/, we can only buy DISCOUNT tickets? Seat61 directed me to that site. And when those are sold out, we need to book elsewhere (if we don't want to buy onsite, which we do not, because we must travel on a specific day, and cannot risk them being unavailable)? Any feedback on czech-transport.com? That seems to have reasonable prices also.

It is the Rick Steves site that says not to have tickets mailed to the US.

Most European railway web sites I've used, except the German one, don't offer mailing to USA. The Czech site may or may not - we have not invested much time in testing that one. If tickets are mailed to you and lost in the mail, it can be hard to follow up or get a refund. E-ticketing is a safer, simpler option whenever it exists.

CD.CZ will only sell discount tickets online, they sell full price tickets at their stations, so I have been read on the forums. What date are you trying to purchase tickets for?

GCEK on trip advisor Czech forum is an expert on trains in Czech, here is one post:
http://www.tripadvisor.com/ShowTopic-g274707-i96-k7170242-Prague_to_Krakow_overnight_train-Prague_Bohemia.html