In case you are looking for computer supplies over the internet, Costcentral.com seems to be a good option.
This website is the online shop of Erie Computer Company, an Erie, Pennsylvania (United States) based computer company, that has been operating for more than 25 years. Here you can find almost everything you need for your computer, like printers, monitors, hard drives, projectors, memory, audio devices, as well as software and notebooks. On their website you can browse trough their entire catalogue, sorted by different product categories and brands. Each product displays pictures, details, and price and they are all available to buy online. At the moment, they don’t do international shipping, so it’s exclusive for American citizens. In case you have any question, or claim, you can access their customer support team either by phone or online by instant message. Finally, any order above 599 US dollars has free shipping. 
