That is an expensive sale for a new seller.
Have a close look at the potential buyer's feedback - received and left for others - and make sure they seem genuine before you agree the sale.
Remember, 'no returns' doesn't mean the buyer can't return the item if they claim it arrives bent etc.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
