I am no Nishiki expert but I think $200 for basic ChroMoly and Edge is OK, but I don't think I would say its a good deal.
50cm is pretty small.
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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