My only suggestion is look at a lower price bracket. Spending 10 to 15K on a car seems excessive to me. I would be looking at no more than 5K. Any money spent on a car is money down the drain, so minimise it as much as possible
Really depends on the persons financial situation. Someone making $300k a year may want to avoid the additional, sooner maintenance of a $5k vehicle vs say a $15k vehicle. If the family makes $40k, it may be a different story.
For reference - I own both a 99 and 2017 vehicle. We love the 99, and paid $5k for it years ago and it’s low miles, but it certainly needs more upkeep.
We currently have an 07 and an 09 (keeping) sedans. The 07 has been a money pit for years, we'd be lucky to get 2K in a private sale and it probably needs more than 2K worth of additional work. We spent 3K rebuilding the 09's transmission two years ago and it has 100K+ miles. We need a larger, reliable vehicle for long car trips with our kids and dog. We work full time and DIY a lot of stuff, but not car repairs. We are leaning toward the cheaper car, so I'm not really doubting the decision to lay out probably 9K. Even if we don't make 300K per year ;)
I understand these issues, but my point still remains. Money spent on any vehicle is money down the drain, so minimise it as much as possible.
If you are having to rebuild transmissions after 100K+ miles then you probably need to do better research before you buy the next car. I have had one car do 580K+ kms without any major repairs, and the only servicing was oil change, air filter and spark plugs every 50,000 kms. That car stopped running because my son drove it into another car. :( We bought a replacement, same model, 2007 for $2200 with 250,000 kms on the clock. It also hasn't cost us a cent yet.
We also recently bought a 2001 car with 260,000 kms on the clock for $3000, as the other car was handed onto my daughter. Again, no issues that stop it from running. The roof lining was falling down, so I pulled it out. We
may spend $150 getting it replaced, or may not. It just isn't that important to us.
Maintenance on a $15,000 car, if you follow service schedules to try to maintain the value of your car, and you get it done by the "shop" will be significant. Older cars are often cheaper to service and maintain than newer ones, provided you don't have a major failure. The "newer is cheaper" mantra doesn't really add up from what I have seen and heard.
Do the homework. Check the reliability of cars you are interested in. Don't assume newer is cheaper to maintain.