And I am just sharing my experience, which is very different from yours. TNIA is a great program, safe and well run. Just like reading about people having wrecks with instructors in the car with them, if people are driving over their head, bad things can happen.
And it looks like you understand my point about the house price, different areas have different costs, so while you can get a fully track day for 200 with instructor, that isn't everyone's reality.
"If you're just interested in doing it once or twice for the experience, save up and do it right, even if costs $500 "
Now you sound like the rich old guys on the Corvette forum. I tracked my 450hp C4, and was always trying to save $. Frequently I would hear them say "Stop being cheap and do it RIGHT and just spend the *way more money then I was spending*". Yeah if your tracking your 100k Z06 you brought in your 100k tow rig setup, spending a couple $k in tires every other event isn't a big deal. But that isn't everyone's reality. Does that mean I shouldn't have wanted to track my car, because I didn't want to spend that much money on it?
My point, when you say "Do it Right" is the $500 option, a lot of people just are not going to do it. But there is a completely valid $150 ($125 after the inevitable $25 coupon) option.