Thanks for posting about this. Even giving PDI some sympathy and benefit of the doubt for the cost having gone up unexpectedly, what's amazing (and classless) to me is that he straight up tells you in his email that he's still insisting on a 30-40% profit margin. Personally my first opinion is that he made a commitment to sell it to you for $175 and should've kept that promise. But my fallback opinion is that even if he couldn't bring himself to take the small loss, he should've sold to you at his new cost and not still tried to squeeze you for profit (especially at 30-40%).