I do ecommerce, and usually sell for 500% over cost. Don’t be shocked, out of increase I have to pay platform fees, credit card fees, overhead, pay for my few workers, and taxes. Minus all that, what is left over for me is not all that much. Top expense is tax, next is payroll, next is rent and utilities, then platform and bank fees, then there are miscellaneous costs. The big difference between cost and retail feeds more than a few people.