As soon as the tax situation normalizes this will drop back down again. There is simply a limited time for people to act and get the full benefit of buying an electric vehicle. This situation happens over and over again in different places in the world whenever a particular tax advantage is about to end.
Well, the price has been dropping as well. I just bought a Tesla for about 55k that was 72k a couple years ago. Even with less of a tax break it's still a much better value.