Yes, the quote might seem out of line but consider it from the Dealership's point of view. They almost always are providing genuine Honda/Acura parts, the eBay/Amazon/Auto parts Store (or wherever) may or may not be selling quality brands. Also, the Dealership has to cover overhead (lights, heat, power, insurance, "free coffee", inventory carrying costs, etc) as well as pay the Service Writer, Parts Man, Mechanic, Prep Guy (the one who washes the car and gives it a "once over"), and Management's costs.
I'm not saying the price quoted is out of line, or fair, but I'm saying that there is much more going into the Dealership's cost structure than just the cost of the part and the time to slap it in. The bottom line is that everyone has a "price". The car owner has one, Amazon/eBay/Auto Parts Store has one, and the Dealership also has one. It all depends on what is the best match.
I get it, and when you figure shop labor rates, OEM parts (the air filter at $22 is the Honda part, BTW), and the free car wash, that $89 probably isn't far off. It's just more than I'm willing to pay someone else to do when the tasks are dead simple.
I agree! Throw in the time wasted to go/wait at the Dealership (unless they're doing other work for you at the same time), and it exceeds "my price". That's a big reason why I've done all of my basic maintenance for many years...
Also, as a throw in, it underscores the value of this Forum. It, via Members comments/suggestions may help you determine your own "price structure" for a given situation.