Can't seem to find the prices for a one-day pass, a three-day pass, and a seven-day pass anywhere on the London Transport website. Anyone know these prices? Thanks!
Prices depend on the zones you want to cover. You can find details for pricing of the 1, 3, and 7-day cards (and the myriad of other fares) at http://www.tfl.gov.uk/tickets/faresandtickets/2930.aspx . You can download it (or just look at it) in pdf format from that page. Look at getting an Oyster card, since their price cap will always be about 50 p below the cost of a similar day pass.
Thanks, the Oyster Card will serve us for a couple days, then we're going to get the 7 day paper card so we can get all those great 2for1 offers in London.