But he had to sell bitcoins to pay for the costs of his materials from the manufacturers, that is the only reason why he would sell them.

You were taking a risk when you invested. He's not a scammer. He had no intention of hurting anyone. Tom paying people back in USD is normal, its fair, you are getting back exactly what you invested. You would've profited if the price of bitcoins dropped. Just be happy that Tom is trying to pay everyone back