Posted By:
Jeff D.I've seen this debated countless times between buyers and sellers. The prevailing argument from sellers is that they should be compensated for every aspect of the "costs" they incur while shipping your package. This includes (but may not be limited to) the bubble mailer, tape, ink, gas to and from the post office, their time, actual postage, and possibly the electricity to power their computer and printer when printing the postage/invoice.
I usually try to ship for free.