It depends on the size and detail. How many can you fit on the roll you have now? Since you already own a cutter and have vinyl for it, you may want to try doing about 25 and see how long it takes. I would sub out 150 but if you're not going to use the material you may as well use it up before doing that. My target market when I go to conventions with a tiny craft cutter is custom on-the-spot one-off personalized designs. There isn't much profit to be had if the cutter is slow, plus all the weeding you'll have to do if it's a very detailed design. Big shops have auto-weeding machines that don't take off everything, but definitely speed up the process considerably.