Yes I'm willing to do escrow. In fact I can offer better: paying half (.001 BTC) before you order the SIM, then we do a trial where you receive and relay 1 code, then I pay the other half and you agree to relay more codes for the next 6 months. I don't expect to ask you to relay more than 4 or 5 codes total over the 6 months.

I don't know what information HelloMobile.com or Tello.com requires. I was suggesting them because they seem popular and well-known. But you can suggest any other MVNO provider of your liking.