there's no need for tricks... just go to the item, click buy now, until it asks you for your credit card number(choose different payment method) as if you were going to use a new credit card.
at this point click cancel.
Order should be listed under "orders awaiting payment"
Now the seller can adjust the price.
at this point click cancel.
Order should be listed under "orders awaiting payment"
Now the seller can adjust the price.