Post only one set of pictures showing only one item.
Under the Choose a Format and Price there is a box called Quantity. Insert the number 4.
That's it.
As each item sells, the listing will repeat and the number available will automatically be reduced.
If a single buyer purchases more than one, the shipping price will double. Don't fret.
Just adjust the shipping to discount for quantity. If he pays immediately, send a refund, but remember Paypal will not refund your fees on the discount so adjust the buyer's refund for that too.
