Patent ID: 8145541

Claim:
A computerized method comprising: calculating an expected price for a first listing that has a title with one or more words by determining a plurality of sold listings similar to the first listing and averaging a plurality of prices at which the plurality of sold listings were sold, the determining of the plurality of sold listings including calculating a word weight by calculating a base-10 logarithm of a ratio of a first number of listings to a second number of listings that have titles that include a word in the title of the first listing, the calculating of the expected price being performed by a processor of a machine; receiving a proposed price for the first listing from a client machine, the proposed price being lower than the expected price calculated for the first listing from the plurality of prices at which the plurality of sold listings were sold; and in response to the receiving of the proposed price, conveying a message to the client machine that the proposed price is lower than the expected price calculated for the first listing, the message being conveyed with price and popularity information related to a second listing similar to the first listing.