If no one is going to escrow grin coin, will you send first? I think you will not. However, I am interested to buy 100 grin and looking for someone as escrow. I will let you know if I find one and will do the trade soon. By the way, if you want to send upfront, leave me a pm.
It's easy like another use mentioned here. Say you are buying with BTC.
Send the BTC to the escrow. The seller send the grin to you. Once you receive the grin then as the escrow to release the btc. It should be simple.
By the way, lately I can see grin is creating hype LOL
Goodluck girnnies 🙂