it is hard to say what the value is. selling a bike like that is not like a selling a road or mountain bike. you can't really do much with it but run errands, well you could take it for long rides but it is not practical.
condition and location are big factors. also a bike like this is old and therefore must be valuable.
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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