On small PRs (small features / changes ~hundreds to thousands of lines), I'd say around 500,000 total tokens.

On large PRs (new feature sets for apps ~10,000-30,000 lines), around 2-3 million total tokens.

By the way, I should have mentioned in my original post, adamsreview counts tokens used by sub-agents across the stages, and tells you at the end of each stage the total used so far.