The website was not loading properly while using my mobile device. It would freeze when I got to the point of trying to check out. I then went on to my laptop instead to see if it was simply an issue with my mobile but the same problem occurred. After a few "refreshes" it brought me to the shipping page but it had 2 units listed and I nearly purchased 2 accidentally. I believe this was a glitch with your website and not an issue with my wifi.