I'm assuming that you weren't charged for anything while at the dealer.
Not being upsold is a HUGE deal for me, but once you price out what a simple oil/filter change is going to be (along with the other services), you may reconsider your future plans. I'm able to get a full synthetic oil change at my local guy for $36, whereas a conventional oil change at my local Kia dealer STARTS at $45. A cabin air filter on Amazon is between $8 and $20 and is super easy to change yourself, and the dealer STARTS at $39.
I bought my 2016 a few months ago with 112,000 miles on it and it had never been to the dealer (always been serviced at the local guy or a quick lube place according to Carfax). I brought it in to get the recall done and also had them do all the missed major maintenance through 120,000 miles.
I had the coolant flushed and changed, spark plugs replaced, brakes serviced (front brakes rebuilt), oil and filter changed, tires rotated, and a complete maintenance inspection completed. I did this at the dealer to ensure that I a) wasn't going to run into any surprises with my new-to-me vehicle, b) get it as-close-to-new as I could, c) give it as much future life as I could, and d) get it on Kia's records that I had the maintenance caught up (was also reflected on Carfax). I changed the engine air filter and cabin air filter myself and let them know (they were kind enough to log is as if they had completed it)
I considered that $600 well spent (bit of an peace of mind insurance policy). I'll most likely go to my local guy for the oil filter/tire rotations for the next 50,000 miles or so, and then back to the dealer for the big stuff.
This thread is starting to veer off its original topic, so I'll be brief. Yes, cost will matter to me and of course I'm not going to spend unnecessarily on an oil change. Luckily we don't pile on the miles so I'll have the opportunity to look for coupons beforehand, from the dealership and local shops. But if the price difference is around $10-15 to guarantee that they'll use an OEM oil filter and replace that worrisome crush washer instead of lazily reusing it, I'll gladly pay it. 👍