Find out about service department hours, experience, and training. If the person you are asking these questions cannot or will not answer you, there may be a problem in one or more of these areas that they may not want you to know about. Unfortunately, price is not necessarily an indicator of quality. Experience in buying and selling used vehicles is extremely important. Ask how the price for the vehicle was determined.
Some dealers use the price they paid, and add a standard markup.
Some dealers use the Kelly Blue Book or NADA Retail Book, and others use a combination of both. Market conditions, consumer guides, and time of year can also influence the asking price. Don't assume that the dealer's price is automatically high, but also be aware that even the most honest and fair dealer has at least a little room in the price for negotiation. There may be many conditions or constraints printed somewhere on the buy order or finance contract - take a look. If there is something you don't understand, or something that seems to contradict what you have agreed to, ASK about it.