You might want to consider escrow via John K or other senior board members.
Shouldn't you be telling everyone that Terrahash is a scam and these boards will never be delivered??
Hmmmmmmmmm?
I doubt a company opening their doors to soldering chips on boards and sending them to you for a price is going to rip you off. If they are willing to do that I have confidence they'll deliver devices when they receive avalon chips. You have no basis for your scam claim.