Econ 201.
I've invented many money-saving ideas; one of my recent favourites is this: instead of buying a new automobile, buy new license plates.
You'll drive around feeling like a billion bucks and everyone will notice that special glow of "newness" that signifies wealth and success.
And, you've done it at less than half the cost of a new car. You're welcome.
Let me know if you need more ideas. I have many.