I'm looking to sell some cowling/farings I have for the old bike models I no longer own. When I look on Ebay there are tons of sellers who charge little for these parts (around $50 to $100) and ship them for FREE. For me to put these parts in a large box and ship them via USPS it cost me about $80. How are these people shipping these parts so cheaply?? Do they just wrap them in foam/bubble wrap and ship without a box?

 

I've long wondered the same.