I find it hard to se that someone accepted it then backed out, but sometimes they just see the money and grab it. I wouldn't feel that comfortable doing that to someone. I hope you are able to get that macbook and take that opportunity, but I am just not sure if $50/hr for a macbook seems valid. Then again, Macbooks are pretty good machines and they can definitely be used to run AI stuff. I am just not sure I would feel comfortable letting them access your own computer when it might have sensitive information.