The website would also need to include an Add-to-Cart system, an "Add Funds" system, and the ability to login through their Steam account. Also, a third party plugin would have to be included. This third party plugin is "CSGO Analyst". CSGO Analyst determines the price that the in-game items are worth, these prices need to be updated in real time on my website. You can check out their site at http://csgo.steamanalyst.com.
If you are interested in this project please feel free to contact me. Thank you.