McDoubles were $1 many places until 2016 or later. My standard McD meal for years was 3 McDoubles for $3. After that they raised McDoubles to closer to $2 but the McTriple was also about $2 so I switched to 2 McTriples for $4.
Now the only way to get a decent price meal is to use the app and I refuse to use the app. Now and then they’ll have a 2/$6 deal but it still feels overpriced.
I do a mcdouble and use the free medium fry for any $2 purchase deal. Comes out to 3 or 4 bucks total depending on location which is about what it would have cost in 2015 or so.