Can I buy handlebar tape in bulk 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.
I manage the workshop in one of the busier shops in the world.  There is not, to my knowledge, any way to obtain cork or neoprene bar tape which is not pre-cut to length.  Usually, in my experience, though, one roll is enough to do both sides of a bullhorn bar.