As I said, Houghton was sacked for finishing on 40 points.
Potter come in. 1st season. 41 points. 2nd season. 41 points.
Sure, the 51 points in his third season was pretty good, but not amazing - they spent a good few bob in that time as well.
News to me?
I've just sense checked here and Potter spent just short of £100m net his first 2 seasons as he took Brighton from Houghtons 40 points to 41 points 19/20 and 41 points in 20/21.
Even in his last summer/season 21, with a big sale in Ben White, they still pretty much broke even that window as they spent.
So after sales he spent just short of £100m, and brought in 28 players.