&gt; so I don&#x27;t believe that those are all loss-leaders<p>Probably not. If the products are from over-seas, it&#x27;s likely a great many are being shipped at the same time (a pallet of various products, etc... which cuts down dramatically on shipping fees), then broken out into individual packages once arriving at port.<p>The cheapest way USPS will ship a regular package is &quot;USPS First Class Flats&quot;, which offers no tracking information and is restricted to light-weight and mostly small&#x2F;flat packaging. It&#x27;s $0.98 usually (anywhere in the US).<p>So, if you purchase a $2.00 item with includes &quot;Free shipping&quot;, it&#x27;s safe to assume about $1.00 of the price is for packaging materials and shipping fees. Perhaps another $0.50 is product cost, leaving less than $0.50 in profit after labor is paid for. Seems like very little, but if you ship a large volume every day...