Legi Liner review for Amazon by Codisto

I used to have the Shopify Amazon app for two years which was free. I like the option of having Shopify track my seller fulfilled sales for ease in label printing, to be able to fulfill up to 20 orders at one time and to get my Shopify shipping discount. Now, the Amazon app sales channel was closed, so I was forced to upgrade to Amazon by Codisto. I started with their free package for 50 orders. The first month, I had to upgrade to the paid "starter" plan ($19.99/mo) because I am selling more than 50 orders on Amazon. Month 2, I am again forced to upgrade to the "growth plan" at $59/month, because I am seeing success on Amazon. So, to sell on Amazon, I get Amazon fees and now I'm hit with a Codisto monthly fee and possibly overages. Summary, I went from $0 fees to .19 cents per order. Then it quickly climbed .59-.11 cents range per order. That is an excessive fee per order and cuts into my advertising and profits. I really don't need to be paying $100-200 per month for the convenience of filling several orders at once and to save a few cents off my shipping! Nor do I need more fees, so I plan to cancel this app.