Some sellers used to list an item low like say 99 cents for athletic shoes but with $200 shipping. Back then, sellers were only charged a fee on the item, not the shipping. Because too many sellers were doing this to circumvent ebay fees, ebay started charging a fee on the total amount received, not just the item cost so if a seller has a 99 cent item with $200 shipping, they will be charged a fee based on $200.99, not just the the 99 cents.
Non paying buyers deserve unpaid item strikes.