I bought plane tickets in mid-November 2008 to fly to San Francisco for 11 days in March 2009. The tickets cost me 528 euros and were direct Frankfurt-San Fran flights.
Last night I saw the same exact tickets on the same exact website for 454 euros. I wrote them an email and called them and they said there was nothing they could do.
It just reminded me of http://www.orbitz.com, which states on the website that there is a price assurance that if orbitz sells the same exact tickets for a lower price, they’ll pay me back the difference.
At least I didn’t have to pay 14 cents/minute to call the German website phone number.