Here's something that took me by surprise:
When my dad was in the hospital, I took it upon myself to replace a hubcap... sorry, wheelcover, because he'd lost one somewhere along the way. The dealer quoted me about $75 as I recall. So I visited a guy with a warehouse full of wheelcovers to see what he had. Here's what he told me:
Dealers routinely display cars with factory wheelcovers, but somewhere in the prepping and delivery process, they are removed and replaced with aftermarket wheelcovers. He explained that this is what happened to my dad and that the practice is common.
The dealer then stores away the original equipment wheelcovers and sells sets of them to people who deal in used wheelcovers for more than the cost of the aftermarket wheelcovers that were swapped on when the car was new. Result? Probably a pretty tidy tax-free off-the-books profit on a yearly basis over hundreds of transactions.
The aftermarket wheelcovers look just like the original ones, except they don't have the Toyota logo in the middle. And, of course, they are cheaply constructed where they interface with the wheel.
What a deal, eh?