IMHO you have too much spread in each category.
Rare <20. Big Bang Bar, Loch Ness, King Kong, Krull, Kingpin, Bigfoot, etc. Typically games that never went into production.
Scarce <200. Mata Hari EM, Evil Knevil EM, Varkon, Ticket-Tac-Toe, Black Gold.
Very Low Production <500. Close Encounters, Asteroid Annie, Joust, Lucky Card.
Low Production <800. Eldorado City of Gold, Pop-A Card, Star Race, Spectrum, Joker Poker
Hard to Find <1,200 Safecracker, Cheetah, Flipper Fair, Surf Champ, Viper Night Drivin'
Average Production >1,200 but <3,000
High Production >3,000 to <10,000
Very High Production >10,000
Limited Production to me is skewed in that the manufacturer intentionally limited the production to a certain number of games. Addams Gold and Stern LEs are examples. It still drives up the price regardless.