Aug 26, 2012 - 11:42 AM
You do not need (nor should you want) to buy your ticket in advance. You will not want to make the trip if the weather is cloudy and the tickets would be non-refundable. There is no advantage to buying the tickets ahead of time. They are always the same price regardless of when you buy them and there are always tickets available.
Agree with Annika that Kleine scheidegg is far more scenic. You could also stop one stop further up the tracks at Eigergletscher Station. They have a lovely patio restaurant overlooking the glaciers. Of course you can see the same glaciers from KS but you are closer at Eigergletscher.
Depending on time of year, a great outing is to stop at Kleine scheidegg, have lunch there overlooking the Eiger, Mönch, Jungfrau and their glaciers, then hike (about 1.5 hours) up to Männlichen for a stunning panoramic view. Take the gondola from Männlichen down to Wengen, look through the village there, then continue by train back down to Lauterbrunnen. This would make a very nice outing indeed.
Full fare return Lauterbrunnen - Kleine Scheidegg is 53.80 CHF, Eigergletscher - Kleine Scheidegg is 69.40. You can see fares here http://www.jungfrau.ch/en/tourism/travel-information/tickets-fares/lauterbrunnen/
The Männlichen cable car ride down to Wengen is 24 CHF full fare one way. You can see fares here http://www.maennlichen.ch/en/wengenmaennlichen-aerial-cableway.html
Depending on other travels you will be doing in Switzerland you may want to purchase a Half Fare Card for 110 CHF. This gives you 50% off of all travel within Switzerland.