I assume your not a seller kuromusha1, GSP also amongst other things
offers the seller some sort of protection against defects from postage
price and speed etc. Often sellers are punished by buyers for things
relating to postage that are totally out ...
Also remember if you’re selling 20 dresses a day you will probably be
registered for gst so that another 10% off the top of your sale. It is
possible to make a living (though sometimes I think there has to be a
easier way ), I know $5 might not sound...