Ever have difficulty figuring out a field table of different grades? (Guestimator) that Im working on that can fill in the prices in every grade within a KM group. It does even averaging and you can select how much the increase is between grades.
This sheet is waaaay waaay in Beta, and difficult to use right now, but here is an example

*also free, no macros, no code, just Boolean logic.
** I make no claims of ownership, just for fun and hope to help others. Please edit as you see fit. Everything is unlocked, nothing hidden.
Mike