What are the pricing methods while creating an ad?

 The seller can set the product’s price in one of these ways: 

• Best Price
  No price specified. The best order received will get the deal. 

• Negotiable Price
  Buyers will be able to send orders lower than the specified price.  

• Fixed Price
  Buyers can pay directly at the exact specified price without sending orders and waiting for acceptance.

In case the seller chose this method, the buyer will be able to pay directly.