Information before opening a shopify plan

Good evening, I would like to purchase a shopify plan to sell my products.
I want to take care of the shipping. Shopify will only be needed for me to make payments to customers. What is the best solution and plan for this need?
Also, my products do not have a barcode, is a barcode necessary to sell in shopify?

if this is not the correct support email to ask these questions to, you can resend the email?

Hi @Klaudi2323 ,

You do not need a barcode to sell products on Shopify. Barcodes are optional and mainly useful for inventory tracking and integrations with certain POS systems or third-party logistics. You can simply leave the barcode field blank when creating product listings.