Imagine all of the money you’re losing. You probably do 5-6x the volume I do then. So might be losing $60,000-$70,000 or more a year by not weighing your ingredients. You could pay someone minimum wage to just pre-weigh ingredients 5 hours a day, 7 days a week and it would cost you around $14,600 a year ($8/hr x 5 hours a day= $40 a day, $40 x 365 days in a year = $14,600 a year). You would still save $45,000 a year or more.
With the scenario that you described where you said the extra 30 seconds per pie equals 90 hours of labor per month, you’re still saving yourself money by weighing. If the employee makes around $8 a month x 90 hours, that would equal $720 a month. I would be willing to pay the extra $720 a month in labor to save $2,000-$3000 a month or more in supplies.
I don’t mean to argue with you. The pizza business is hard enough as it is. So if someone can save some money in any way, I hate to not see them take advantage of it.
Also, I gave a high estimate of 30 seconds per pie as a worst case scenario. Once my pizza makers got used to the scale, they had no problem. They were making their pies just as quick as if they were free handing them.