Looked it up:

McDonald's double cheeseburger hasn't been a dollar for over 15 years (started in 2002, and in 2008, the McDouble replaced it, which had one fewer slice of cheese). And the McDouble itself stopped being a dollar in 2013, over a decade ago. Bit more than "a few years ago"--I think Covid screwed up everyone's perception of time more than usual, lol.

That said, I get lunch at work several times a week at Wendy's and always pay less than $5, not too bad all things considered imo.