What kind of support does ShipStation provide? Are there any additional costs?

There is no additional cost for support – for the first 30 days the support is going to be handled by an Account Manager where a user gets their direct phone number, email address and a link to schedule a meeting with them from the first-time signup itself. It is more like a walk-through. Then after that, ShipStation has chat, email, live chat support which professionals looking into them.  For enterprise users, ShipStation has a separate team that has dedicated inbound phone support, chat support, etc.