You are probably better off not buying from that seller. Offering something for a low price and charging high shipping for it is (IMO) a form of scam because shipping costs are not refundable. This means if you had bought the iron and wanted to return it for refund, you would have been refunded only the price of the iron -- not the shipping costs for it you had paid.
I would not leave negative feedback unless the seller has already left good feedback for you; otherwise they can retaliate and give you bad feedback.
Also, search for your iron again and then save that search (there is an option on the page you can click) so you are emailed whenever an iron like that is listed again on eBay.