Hire a prepper and pay them above market hourly wage, save both time and money
Prep yourself: $0 in fees, 20 hours a week
Prep center: $1 a unit, 0 hours a week
Say your time is worth $50/hour, which is conservative. 20 hours is $1,000 a week.
At 1,000 units a week, the prep center also costs $1,000.
Same cost either way. One lets you grow, and the other caps you at however many hours you can stand to prep.