Select the 'sale' link in the top menu section. The following screen will show an item for sale. To purchase the item, select the title near the sale item. The next screen will describe the sale item in detail such as price, description, etc. Then, select 'buy'. Now, just enter the quantity required and select 'Confirm Purchase'.
You have the option to pay directly to the seller or through this site with an escrow fee. If you choose the escrow, you can pay using a credit card, PayPal, or check/money order.
Once your item is successfully delivered, you can change the order status to 'Delivered'.