Whether or not you will get full use out of a TravelCard depends on where you are staying, also. For the day TravelCard that cost 4.10 pounds per day - you would save money if you had two Tube rides and one bus ride per day. It was worth it every day for me, but I was also staying at a location that was a bit far out. In addition, having a TravelCard gets you a discount on one of the Thames cruise passes. Because I had it, I was able to get a 2-day pass for taking the boats up and down the Thames (I'm fairly sure that this was for Circular Cruise) for only 8 pounds. I went out as far as Greenwich.