I run several web-stores. Do I have to purchase several copies of the extension?
However, there's one more thing you should consider: if you purchase our products, you may install them to your Magento development website. We assume a website to be development if it's not public and if it has no real orders / customers. In this case you don't need to have additional licenses. You may install extensions to your production and to your development websites under the same license.