The city is selling some more of its surplus equipment through an online auction. Salem two years ago signed up to use municibid.com, an online auction platform for municipalities and other government entities. Unlike other auction services, municibid does not charge a commission on sales. Users pay only a flat annual fee for unlimited auctions. “Given the success we have had in past auctions, the city of Salem has decided to continue offering our surplus goods on municibid,” Mayor Kimberley L. Driscoll said in a prepared statement, adding, “The online auction allows us to expose our items to a much broader audience resulting in more bidders and higher bids for our items.” The current auction opened July 2 and features items ranging from a fire truck and other vehicles to a street line painter and an air compressor. Depending on the item, bidding will close at various times this Thursday. For more information or to place a bid, go to the Purchasing Department's page on the city's website, www.salem.com.