We are cutting in real time here... some actually cut in half time, but that's a story for another day.
So, 1 minute of audio takes 1 minute to cut :)
If you want to do large runs of vinyl, you're best off getting a master acetate cut and a factory to stamp them for you. This is much cheaper in the long run and will give you some room to make money without spending days cutting.
Short runs, are of course possible :)
("I feel some mastering tips coming to our website")