I just got a lot of i think 9 or 10 LP's off ebay, the sender put 5 lp's in one plastic sleeve (vinyl out of the jackets) and 5 in another, he put cardboard between them as well as on top/bottom of the stack, then put everything in an lp mailer.... it all seemed pretty good to me, no damage or anything, there wasn't much room for the lp's to move around.