Posted By:
andy beckeri have never had a problem with the stuff i sell. for graded cards, i use a paper towel (wrapped around card and taped) and a bubble mailer. never had a single complaint. did have a couple feedbacks that praised me for my home-made slab holder 
for raw cards, put in penny sleeve....then toploader....then surround by four other toploaders....then put in a taped "team bag".
again, never an issue.
now watch, i probably just jinxed myself....