With some items there may only be one item available, and you might not be able to increase quantities despite there being an option to do so. So, to save you time, before purchasing, please be sure to double check to verify if the item you are purchasing is a one of a kind or has a maximum purchase requirement. You can find this information in the item description page. Also, some sales are made in person and the website is updated accordingly, if the item was sold just prior to your purchase, you will be notified, and a refund will be issued. Thank you for your understanding :)