The appraised value is an estimate of what the property is worth, estimate being the key word. Sales price is the price the property last sold for. List price is the price listed by the seller for sale.
Example: I bought a piece of property for $100,000 - That was the sales price.
The property was appraised at $115,000 - This is an estimate of value given by a licensed appraiser.
I'm going to put my property on the market for $120,000 - This is the list price.
I sold my property for $118,000 - This is the new sales price.