I reckon about one in ten of the records from the states are badly/bizarrely packed.
Jiffy bags with no stiffeners are the most common and nearly all the records turning up like this are broken. Some prat in Chicago (runs a record shop) sent a 45 with no stiffeners in an LP mailer and then came on here slagging me off and reckoned a 5% breakage rate was OK!
The strangest packing was a 6 by 6 by 4 cardboard box containing a 45 across the diagonal, packed in those polystyrene bits, sent by Pythagorus records
The most recent was a Paul Sindab on Powertree that was in a (new) pizza box, wrapped in newspaper, shrink-wrapped to one side of the box. When I complained about the risk the dolt had taken with the record he said he didn't know what a record mailer was.
I explained that a record mailer is for mailing rare, expensive, 45 rpm records internationally and a pizza box is designed to get hot fast food no more than 5 miles across town. He claimed people had thanked him for packaging the records well, so I explained the notion of irony to him.
Weirdly, all the records that are sent normal postage always turn up. The only ones that go missing are those that are tracked to the departure point in the country of origin and then not tracked until signed for in the destination country. I suspect a record collecting postie/customs officer at the point of entry to the UK.