This would be classed as a bulky item so there is a workaround to use here.
List it as ' Free Postage' .. Seller pays, and factor in the postage cost into the item price. Then, buy your own postage.
You need your buyer's name and address and to be able to mark it as dispatched, you need then to click on ' Get Prepaid Label >> Print Label to get the original Simple Delivery label.
The label will be unused so you need to get this refunded. You'll need to fill out the Request a refund for Simple Delivery form for the label that wasn’t used. Make sure to send your request within 14 days of your item selling.
@paulr3264