I have a couple of commuter bikes with bullhorn handlebars. When I replace the tape on them, I always have heaps left over, since the bars are much shorter overall than standard drop bars. There's never enough to do both sides of the bar with a single roll though, so I end up throwing out a lot of tape.
Can I get tape in a continuous roll, rather than pre-cut sections? I assume workshops would buy their tape in longer lengths, but I can't find any sources for it.