We've been using Strength Tape for years, first in the 10" ($12), then when the 5 meter rolls($12). Now we find 35 meters for $18! Only in blue, but who cares! Strength Tape is the best "K" Tape we've found; good adhesion, great stretch, stays on well.

Good price, but you get what you pay for. The tape doesn't stick very well once you start to sweat or if it's humid. I guess that's why you get so much, so that you can keep removing and putting it back on.