> What did Trevor say the development cost for the x1000 was?

http://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=7183&start=831

Regarding Cyrus (Plus) and Tabor:
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=11432&start=37

> how much did every beta board cost to make?

I don't know, sorry.

> he had to add that price to the board

Trevor said he didn't add the development costs of Nemo to the board's price. But he will do so with Cyrus (Plus) and Tabor.

> People just don't expect design, development and testing to cost that much. But it does.

Yes, and that's "just" board design. Chip design is even more expensive.