Take Dofus Item as an example. First of all, move your mouse to the left-side game list and select Dofus, it will shows two options: Kamas and Item, as it shows below:
Secondly, click “Item” and access to Dofus Servers page, choose your server, and the on sale items from the selected server will be shown as below. Move your mouse on the item name or the picture of the item, you can find the details information about this product. Fill in the amount you want to buy and then click “add to cart” to continue.
Please pay attention to the attributes and amounts you confirmed, click “Continue” to go on your purchase.