Yes – When a purchase is done “we” the owners of the store receive commission per the order. But we also receive commission on the TAX & SHIPPING. Ideally we would like to make commission on the order only less the TAX & SHIPPING.
Please update Dokan to the latest version which is v1.3. We fixed the shipping problem in our latest version. But now we do not have any feature of “TAX”. We are working on this feature. Hope in our next update we will implement this feature. If you are having problem to update your plugin then you can download it from here- https://www.dropbox.com/s/wzfn1qcufglsrgp/wedevs-dokan-plugin.zip?dl=0.