In ANY negotiation, you need to control the information. Highly predictable, above-market sales results do not happen when you lose control of the message. Handing control of your sales outcome to the market (using lazy sales methods such as Pricing or Auction) dramatically increases the levels of uncertainty and lowers the potential to secure an above-market sale. To achieve the optimal sales result you need to control the presentation, the pricing and the pitch. Anything less is simply placing your home into the hands of Lady Luck and just crossing your fingers!