Negotiating statistics

I have often been asked by buyers - how low below the asking price can we bid?  The sellers of course want to know - how much buffer should I leave for negotiation when I list my house for sale?  My answer would be - depends on the market.  For all single family homes sold in 3 townships in Downingtown schools over the last 3 months, the average difference between list price and sale price is 3%.  Please bear in mind, sellers may have started much higher and progressively reduced their list price based on their motivation.  These are list prices at time of sale.

Please click on the table to see all the data.