How many have used Shopify to process payments in QB? How easy is the process? Affordable?

If you are trading goods, you may utilize an inventory management app to sync data between Shopify and QBO. Otherwise, you may explore these 3rd party connectors

https://automate.io?ref=quickbooks

https://www.a2xaccounting.com/shopify/pricing

promo code: QUICKB to get 20% off for 6 months