there is a good reason for that...ebay doesn't get a cut off the shipping price, only the sale price
i for one (like most buyers) don't really care when i spend 50 dollars on an item if 5 of those dollars go to shipping or 45, as long as i find 50 shipped a fair price
so, if a seller claims shipping is 30 dollars instead of 5 that is 25 dollars less he has to pay ebay a fee on
in short, if i sell you a product for 100 dollars and charge 50 for shipping i clear a bigger profit then if i sell it for 150 and offer free shipping, even though the cost to you is the same