I'm looking for a website developer who can help design a suitable e-commerce site for my digit data. I will be selling subscriptions to data the I can generate which holds significant investment value. I will also be looking for ongoing support when the site is running and may lead to other website creation opportunities. Technically I require the website to be able to perform checks (to see if a certain IP address has already visited the website in the previous 7 days) I hope to provide a free sample of the data to the customers every 7 days in order to generate business. I want customers to be able to register to this website and receive email offers. Please contact me if you can provide this service at a reasonable cost.