Short version:
10/100 Hyundai Platinum w/$0 Deductible: $1199
Long version:
I didn't research the extended warranties before purchase, but thankfully, I found this site soon after.
At purchase time (about 3 weeks ago), the finance guy offered us an "Ethos" warranty (10/100 bumper to bumper, $0 deduct at the purchasing dealership) for $2500.

We "talked him down" to $2100 and felt ok about it.
Found this forum soon after and realized it was a ripoff. I went back to the dealership and asked about the Hyundai Platinum warranty. He tried convincing me that the Ethos was better since it covers "the same stuff" and includes 2 years of maintenance. I asked him the price difference, which he said he could offer me at the same price.
Mentioning what I now know (but not mentioning this forum), I said I know what the dealer cost is and would offer a few hundred more than that. He said he can't go lower than $1900. He then proceeded to click something on his computer that showed the "dealer cost" of the Hyundai 10/100 Platinum warranty with $50 deductible: $1461 and change.
I informed him that I would be shopping at other dealerships, would prefer to do business with him since I bought the car there, and gave him one last chance before walking out. He wished me luck, so I walked out.
I called up 4 surrounding dealers, leaving voice mails for 3, talking with one and sending her an email. Never received an email back, but one of the others called me back. He apologized for not calling me back sooner (he was out yesterday afternoon) and was immediately up front with the dealer cost of $1050 for the Platinum 10/100 with 0 deductible, and said he prices it at $150 above cost. He said he knows people shop around and doesn't want to waste his or my time, plus wants to earn my business in the long term. And you know what? It worked, because if I buy another Hyundai, it'll be from his dealership.
<rant>
I went back to the dealership I purchased from to officially cancel the "Ethos" warranty, eager to see the finance guy's reaction. I said I found a better deal and want to cancel the warranty. He asked how much I paid (I told him) and from where (I didn't tell him). He was very curious about why I wouldn't tell him, so I asked "Does it matter?". He flubbed a bit, not expecting me to push back. I did say it's one of the 4 other dealerships in the area.
He then pulled out the Ethos contract (not mine, just a blank one), left it on his desk, and walked out to talk to someone (I seriously think I'm one of the first ones to cancel an extended warranty within 30 days because he had no idea what to do). I read the front of it under "Customer obligations", the first of which is "oil changes every 6 months or 5,000 miles".

If that's the case,
I would have voided the extended warranty after the first 5,000 miles since the Genesis doesn't require that.
He brought the finance director with him back to the office, and said the would match the offer I have (without checking the validity) and they would "deal with the loss later".

I proceeded to tell both of them they had their chance yesterday and I already purchased it from the other dealership. They looked at each other, shook their shoulders, and said "ok, just cancel the Ethos". Did he really think I was going to give him two chances?
</rant>
I asked the finance guy at the dealership if I can share his name and dealership name. I will report back if he agrees.
Update: He agreed. PM me for details.