You had from the time you picked up your car all the way until last week to buy it at the lower price. It isn't Tesla's fault that you didn't take advantage of it during that time.
After the first trial I was doing overtime to save up the 6K, which I was willing to spend. I didn't want to put any on credit. Then without notice, it goes up to 7K and again, I'm short.
You're correct, my lack of purchase is not Tesla's fault. The sharp price increases are. A notice to all customers saying the price will be going up on X day would have been nice. Gives people the chance to make a good decision.