Just to make it clear here.
You don't have to connect your store to use Profitario.com . This is an additional feature so you can actually connect your AliExpress orders to your shopify orders.
Using our server to process the orders actually gives us multiple advantages over just a chrome extension.
Why is Profitario Free? Profitario itself is not free, just the invoice generator is free. We would love it if you upgrade to our full version with shopify integration but you don't have to. You can create as many invoices as you like.