If the subsidies are per job, is that a problem? Pay half as much for half as many jobs - seems reasonable to me. Doesn't seem like "false pretenses" in a way that materially affects the deal.
Even if they are "per job", the per job price was still based on a total of 50,000 jobs.
If you go to Bob's widget factory and place an order for 50,000 widgets, you'll likely get a different per widget price than if you place an order for 25,000 widgets.
If you say at first that you want 50,000 and Bob starts making preparations for that many, then at the last minute you say "Nah, I only want 25,000", Bob is rightfully going to be pissed and you're going to pay a higher per-widget price if your order isn't cancelled altogether.
