Aren't the high costs of injection molding well known?
If they knew their business model was only viable with 50,000 orders at $99 each, they should have set their target at $5million. Anything else is dishonest and deceptive.
http://www.protolabs.com/protomold
$10k buys you a LOT of tooling there and they'll do the maintenance on it if it starts to wear. Yeah you pay more per part, but who cares if it's a $0.20 or a $0.30 part when you're talking about going from $1 to $0.10 of overhead per part.
This whole thing reeks of massive, gross incompetence.