I agree he is doing the sellers leg work in figuring out shipping. $40- 50 for a professional packing and 40 - 60 shipping. if it is an expensive bike and the seller does not normally ship bikes spring for a professional packing.
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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