On sites like eBay and Amazon it’s going for around $200 USD

$200's unreasonable for that game. I'm seeing ranges more like $45-$60 for the bare disk and $55-$80 for the disk, case, and manual, on Ebay. Even on Amazon, looks like you can get it for around $70.

That's still a lot of money for a game, and it sucks that a year and a half ago, it was half that price.