It is expensive, but cost per frame isn't outrageous.
I wouldn't personally buy it for 4k gaming, since it often performs the same as a 3080, but for 1440p it's fine. If you can find cheap rtx 3000 or AMD cards they can be better value, depending if your PSU can handle them. 4070 TI isn't that power hungry, I'm personally using it with 650w Seasonic.
Edit: Just so you know the prices at the picture are from the launch day of 4070 TI so the numbers will be slightly off at this point.