Hello ladybug from your discription your Bianchi sounds more like a 1989 Forte with Tange double butted frame and Suntour XCE components. the above price sounds right and replacing it today I think would cost about 850 to 900
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk