Vigilance monitoring and a navigation aid are provided to a user in an electronic auction by receiving by a computer a command to watch similar items to a first item in an online or electronic auction; extracting by a computer from the command, from the auction, or from both the command and the auction one or more item descriptive parameters; using by a computer the extracted parameters to query one or more online or electronic sales sources for similar items matching the extracted parameters, the sales sources being electronic sources other than the auction; receiving by a computer at least one price for an available similar item from at least one sales source; and causing prompting by a computer a user of the auction with the similar item price and sales source.