I've not noticed a correlation between what the seller charges for shipping and quality of the packing job. Experience seems to be the key - so if a seller is charging a low shipping and has no history of shipping a machine, I will contact them about it before bidding and then decide if I'm willing to take a chance. I've bought from several sellers with lot of experience that charge actual shipping, so they are including any shipping supply costs in the cost of the item, and they do know how to ship a machine safely.