Congratulations for the e-shop module and for letting people try it.
Found this errors (I think are errors!):
.If you have a link outside the e-shop module to the page where you have the product for sell and you add it to the cart, the product will be added. But if you leave again the e-shop module to another module, when you comeback the product that you added will be with 0 quantity. This error don't happen if you always inside the e-shop module.
.When you submiting the order appears the message "Payments for electronic items are made by means of electronic payment.". Well, all items i've added are tangible products!
.If you have a file catalog, you'll have a search engine associated to the file catalog categories that will find files by kewyword. The e-shop file should have also a search engine like the one the file catalog has (or even powerfull). This is most needed if you have many many products to sell.
.If you buying online, I guess it would be more useful to force peolple to give the e-mail address than the phone number (and why the international code? If you buying outside your country you'll put the code!).