Time consuming, difficult set up, overly complicated - Having worked with Webgility before (which is very easy, intuitive and has great set-up instructions, but is more expensive) I didn't think setting up Synder would be any big challenge. Boy was I wrong. Maybe if this was a first-time syncing set up you would find it easier to work with but having a previous system in place with an established work-flow, made this extremely difficult. Being a small business owner, wearing many hats, I couldn't spend the amount of time it would take to work your way through this confusing flow. Linking not just channels like Big Commerce and Amazon, but also Payment merchants like Paypal and Authorize.net, meant that I would get duplicate invoices, both subtracting inventory from my accounts on one transaction - one from Big Commerce and one from Authorize.net, etc. It also created multiple clearing accounts in my chart of accounts (which would be workable, but time intensive), and also new expense and income accounts. I should have dropped it during my 15-day trial, but I figured that I just needed to get my head around a different workflow and instead of fighting to make it fit mine, I tried to go with the flow and understand theirs, who knew, maybe it was easier. But reconciling all of these individual clearing accounts (Amazon, Big Commerce, Authorize.net, Paypal) and try to map products and expenses, while trying to keep the syncs going so shipping could continue was a nightmare. And nowhere could I find decent documentation on what different setting meant.The syncs also take forever, compared to Webgility. I would have to go find something else to do each time I tried a sync, even if it was just a few orders to test results. While scrambling to keep it going, figuring that I would eventually get it fixed issue by issue, my 15 days were up and they charged me for the full year. Still I was willing to keep trying, because I also knew there were smart rules that should be able to help me refine issues, once I got a good idea of what my issues were (there were so many I didn’t know where to start with support). I thought the smart rule purchase was a onetime $49.00 fee for ten rules, then found out that it was a monthly subscription fee so the initial $88.00 per month which I had signed up for went to $137.00.I finally just gave up and cancelled within 30 days of my initial download, and they are keeping my entire yearly subscription fee, no prorated refund of any kind. I’ve gone back to Webgility and the set up took 30 minutes. All is good. The price difference is negligible when you consider the extra $49.00 monthly for Synder over there base fee and the hassle. My nightmare is over, they can keep my money, I will tell you to be very careful with this set up. Be sure you have all the time you need to try it and realize how difficult it is and then go to Webgility. Or maybe just save yourself and try Webgility first.