I guess I haven't read the fine print. There must be a reason that pre-rolled joints for sale are ridiculously large, and "smokable" only by a largish group, or by someone with yogic breath control. I wouldn't roll joints like these unless I was hosting a frat party or a rasta convention.
Meanwhile, consider the missed opportunity: we could have joints rolled by experts, who have studied how to roll the perfect joint: texture, density, geometry, etc.
I'm no expert, but even I can roll a better joint. A lot better.