Figuring out asking prices for villager trading

[Fuzzysaurus Rex]

According to the popularity TBT chart, Diana is 5th place in Tier One so I guess she's pretty popular. Can anyone tell me how much does she generally go for on TBT?

 

[PaperKangaroo]

Most tier 1 villagers have a buyout of 30mil, if that gives you a good idea. ovo