We use Tradebox to integrate Xero to invoice our sales from Ebay and Woo-commerce to great success. It was easy to install and get each sales channel running. The invoices are automatically created with the goods and shipping put onto the correct ledgers, with the correct VAT applied in Xero dependant on the buyers country. Tradebox picks up the SKU's from each sales channel and posts them to Xero so we can keep track of stock and sales volumes for each product type. It does all this 99.9% seamlessly with no human intervention which saves 20 hours a week of admin. There is the occasional update that needs doing by hand, or some change that Ebay make that means some support is required to get us back up and working BUT everytime I've picked up the phone to tradebox an actual real human being answers the phone quickly and knows their product inside and out. Often they just do a remote access for me and have me back up and running in 5 minutes. I was pushed into electronic sales tracking due to the making VAT digital saga, followed by Sage's daft new subscription model. Then we tried the SageOne product that was a bit of joke and the support was useless. Xero has been great to use, and with tradebox we "almost" have an account system that runs itself. Fully recommended and would suggest you have a little play with the trial version and setup a Xero trial too then let it migrate your sales invoices for a week to see it working for yourself.