Vince, why would someone prefer your online grocery site versus the big corporations like Whole Foods, Trader Joe's, Target or Walmart?
I price items at only a 45% markup rather than at retail as with Whole Foods & Amazon and then let Google do the rest. Google will almost always list the site with the lowest price for products. Its not perfect because these companies will show up first along with everyone else who pays a higher ad budget but for someone looking for the lowest price, its a given that they would go to my site. So far in the past 3 months, I've done about 7500 on the website, 1500 on phone call orders and about 200 on sending someone a Paypal or Stripe Invoice.
It may not sound like a lot of money but I built the site for a little under 150 bucks...SSL certificate, Helpdesk Chat, Stripe Module, and Google XML generator. Because it runs on my server with the other 15 websites I run, the only thing I have to pay is about 20 dollars a year on SSL and domain name renewals...no Shopify fee or yearly licenses . At this point, I spend about 20 minutes a day processing orders and uploading inventory updates if any that but making about 900 a month for practically no work is pretty good. I plan to upgrade the Stripe module tommorrow to allow customers to do a Quick Buy and even finance their purchases with Klarma and Affirm.
Ever since I left Verizon, I've just been doing Youtube and running my websites to pay the bills. I've also started building and selling websites on Flippa as well.
