I volunteer with Bicycles for Humanity and have been looking for a source of cheap tape for several months. As old 10 speeds are unsuitable for use in rural areas of Africa, we refurbish the ones we have donated and use them both for fund raising by providing our local university students with inexpensive transportation, and also donate them to some of the local social agencies such as the Salvation Army. If anyone is interested, the cheapest source of 10 speed tires we have found is Mountain Equipment Coop which sells a tire for$9 Canadian. If anyone has any information on any cheaper sources we would love to hear from you. We have sent almost 3000 bikes from our little city and are sending 350more next Saturday to Sierra Leone.