Shopify Marketplace Connect

I use this to dynamically link and list my products (rare antique maps) on eBay. I have used this app now for a couple of years and have found it very useful and well thought out. This is a powerful tool and as is true with all sophisticated tools, there is a bit of a learning curve. Once you get the hang of it, it is great. The bright side to this is that the documentation is very good, clear and concise. Everything I have wanted to do, I have found that I actually can and there usually is a good help article on the subject. The support is very good and quick in responding as well. I highly recommend it.