A couple of the big brand oils (Mobil 1 and Pennzoil for sure) have rebates on synthetic oil at least once a year, which brings the price of these name brand oils far below the Supertech synthetic shelf price. These rebates have been going on yearly for a very long time, often allowing up to 10 quarts on the rebate (covers 2 oil services for most vehicles). So unless you absolutely must change your oil right now, there is no reason not to cash in on these discounts. Last time, I got 10 quarts of Mobil 1 5w30 for about $2.75 per quart. Supertech shelf price is about $3.40 per quart in my area.
THIS! I get my walmart jugs of 0w-40 Mobil 1 for $12-15 every year to 1.5 years. I've got a 2000 VW Eurovan with 210,000 on the clock, and it probably won't make it to 300k because it's a van with an automatic trans. But it won't fail because of motor oil. No cars fail because of motor oil any more. Maybe the sludge era changed opinions, but my take is that they didn't use quality oils, and they ran them for way too long. Nowadays, oil is much better, and you can go 8 or 10 or 12 or 15k miles on an interval. I shoot for 12k in my van. If it dies an early death, it'll be due to collision, or catastrophic failure in the plastic cooling fittings, or the transmission.
The other alternative is an electric car, which doesn't have many of these pesky maintenance requirements
Edit to add: Live really far from work. If you put 40k a year on a vehicle, you'll get to 300k easily, 500 or 600k possible, too! That's why I'm not so confident about making it to 300k any more; I drive 7-10k per year, so my van will hit 300k by roughly 2030. Cars at 25-30 years old are really at their end-of-life. Rubber for the windshield seal and inside the transmission, all the crap plastic will be ready to die. And you can go in there and replace it all, but most will not bother. And even if it's still running, most families will get a newer car "just in case," and that one will get the majority of the miles, since it's safer, more efficient, cleaner, more comfortable, etc.