Why don't you use ebay? The ts where a lot of tvses sorts of sales seem to happen for many reasons. Btc might not be good to use on your website since its irreversible and leans people have to trust you before sending the funds and you also have to maintain a good payment server.,
He can easily be scammed out of his money by selling on eBay.
personally I would go for BTC, but you would have to factor in the refunds and how will you credit the people back, if needed.
eBay and PayPal I personally stay away from them as they have fees which would have to be included in the price, making you sell at either a market price or for a lesser profit.
Fees aren't a problem, people purposely scamming you are.
I sold 1 phone once, and dude initiated a chargeback the next day even though it wasn't theoretically possible for the phone to arrive in 1 day.
The phone was already shipped.
Good thing he was a dumbass and he filed a wrong complaint (unauthorized access instead of items&services) so eBay sided with me since we exchanged messages and it was obvious he wasn't hacked when he ordered the phone.