Wow, good luck with that dealer. Your spark plugs are supposed to go about 100k miles. Your car doesn't EVEN HAVE spark plug wires! (For a laugh, drive over there & ask em to show you the distributor...)

$15 for a set of 4 spark plugs.
$5 for a spark plug socket
$20 for a ratchet & extension (if you don't already have one)
$20 for a new air filter
----
$240 left over for beer
AND you get to keep the tools.

 

they wires and plugs are easy todo, max to do it by yours self is 75.

 

There's a long list of "stuff" that needs done, looking in my Honda service manual. There should be a maintenance schedule on this forum, may not find your year exactly but any recent model year will give you the idea.
Looks like you've done the main thing - engine oil - other items that'll affect driveability and fuel economy are air filter and spark plugs. Don't need to do the wires unless they're cracked or otherwise damaged.
Depending on your driving patterns you may need a normal or severe driving schedule, it'll be in the book.
Also you'll be replacing coolant, brake fluid, tranny fluid, and inspect just about everything: belts, rotate tires, brake pads, brake lines, suspension components, radiator hoses, cv joints, exhaust, etc.
So, if you've never done it before but have a friend who has been taking care of his car for a while (and the car runs), and the desire, you can do it for a lot less. Otherwise the quoted 299 plus tax does not seem like a lot, providing you know what needs done when you enter the shop.
And that you can find out on this forum. I would avoid dealership shops, it's like Vipers says - no offense to any pros that read this - if you have your piece together any clean shop can do it for you for less. If you need "genuine" Honda products just buy'em at the dealership parts counter. However, it's been my experience with my 99 Accord that Mobil 1 Auto-tranny syntetic fluid worked just as good for the 140K miles I have, nice shifts, etc. Also syntetic brake fluid, etc. Then again that's your choice. The reality is that Honda Accord is made in Marisville, OH and there are domestic suppliers for all of their genuine products that carry the Honda label.

 

I missed that one, you have direct ignition, no wires that is, thanks Jim. The coil is on top of the plug attached to the plug pipe. I need a new car....

 

On my 2003, there's a list of inspections, but very few real tune-up needs until about 100k miles.

Things like brake pad inspections, because there's no way for Honda to predict how long they last (so much different for everyone).

 

I have a 2006 Accord EX-L Manual Transmission, 79,000+ miles...

I recently got the "Check Engine Lite", my Accord had an acceleration problem. There were two instances when I stepped on the gas pedal and it didn't even accelerate. After restarting the car, it ran fine. During morning starts, my car would jerk during acceleration when the engine temp is cold, especially during 1st and 2nd gear.

All I did was just replace the spark plugs w/ the iridium NGK Plugs (same as stock), seems to be fine now. Car doesn't jerk during acceleration anymore, even under cold engine temps, no more lights I hope. Adding a fuel injector cleaner just in case.

Just reset my Check Engine buy pulling the battery for 10 Minutes... thanks everyone for the insight!

$15 4x Iridium NGK via ebay (these are $10 a piece at everywhere else)
$15 for the gear wrench Magnet Spark Plugs via amazon.
$5 for the Anti-seize via Amazon
$6.50 for the Lucas Fuel Treatment at Autozone