I know Open Bazaar is coming soon. But is there any way to sell something today for Bitcoin over the internet?

I'm likely getting a few OnePlus invites in a week or so. I would like to sell them for Bitcoin.

Assuming the buyer trusts me, he could simply send the payment to an address I specify. But it's unlikely someone would put that amount of trust into someone on a forum.

Since Open Bazaar is not out yet, is there any escrow service which would allow me to make the transaction as stated above?