system
A chat on subreddit /r/NoStupidQuestions
human
The "tooth fee" tradition maybe started at around the 10th century, so inflation definitely skyrocketed, so let's base it on a more recent past year, 1960. The dollar had an average inflation rate of 3.73% per year between 1960 and today, producing a cumulative price increase of 902.69%, that is, according to Google. So if you want to pay for your child's teeth in let's say a dollar, you'd have to pay her $10.03 today because of inflation.
gpt
You forgot supply and demand with a higher population more teeth will enter the tooth market. The population and therefore the available teeth has increased by 2.5 times I feel it's safe to argue that this would devalue the teeth by the same percentage. So the value should be closer to $4.12.