imagine you were an unscrupilius ebay member
chrageback is when you pay for soemthing
the seller posts it to you
you give it a few weeks
then send shitty emails to the seller
and to ebay
and to paypal
and paypal give you your money back after removing it from the sellers account
all the while, you have your items because they've been delivered but you are trying to be a devious so and so

not you personaly you understand but it's the way that some roobing coounting bastids have started to get money back for stuff theyhave already recived

problem is that you, as the seller, are fucked no matter what, even if you can proove that it was sent and signed for and all osrts of shit