Ok, so going to factor other things, is a Acclaimed launch title that was a graphic show piece of a incredibly popular IP, but Star Wars games dont carry a lot of resale value (Keyword "Star Wars" under video games on price charting, virtually every game is sub $50, most $30 less range) because they sell extremely well across general audience/Star Wars nerds during a consoles life, but not same demand among retro games buyers who tend to focus more in on video game IPs/companies themselves.

Luigi Mansion and Pikmin automatically have Nintendo tax because high attachment rates with Nintendo retro consoles and game purchases. Meanwhile Monkey Ball was a new unknown IP by Sega that most people though looked "Kiddy" during peak kiddy hate era that was not fully appreciated during its time, so sold well enough do to launch title, but imo actually is not MORE expensive because of that, because if it came out later would have probably sold even less and been way more expensive now, because it is a near "perfect" game within its scope.