I just want to share my positive experience with Litcommerce all along and I hope it is helpful. I’m using their services to bulk list products between Shopify and Etsy back and forth and I’m very satisfied with the solution. It works quickly and frequently with little to no errors, and their support team is very helpful and responsive to my inquiries.
I can also modify prices displayed on the channels so they can be different by a particular amount by setting price rules with Litcommerce’s help, as in they allow me to specify the difference (higher or lower and by which amount/percentage).
Hope that helps you!