How do retailers like Naheed, Fresh basket, and Springs work with small businesses?

Heyy!! I need some advice from anyone who’s started a food business and sells through supermarkets or grocery stores instead of selling directly to customers.

I’m talking about stores like Market Deli, Fresh Basket, Springs, Naheed, or Imtiaz. I really want to understand how this whole process works. How do you get your products into these stores? Do they buy your products upfront, or do they take a commission? How does the payment system work, and what are the requirements?

Also, is this business model actually worth it for a small business, or is it better to sell directly to customers first?

I’d really really appreciate hearing about your experience.