Escrow can be provided if it is not a bot like Bitify and if the buyer pays fully for it. I have had unfavourable experience with bot escrows in the past. If you do not wish to employ escrow, customer pays first.

I have past experience in this field: https://bitcointalk.org/index.php?topic=2129233.0

The buyer that I sold this account to did not use escrow. Transaction went successfully and smoothly. Of course, my word will do you no good, but I will just put it out there.