I had a roommate many years ago who had expensive tastes. For her, the price tag determined the value of the item, rather than the item itself, and she believed that status symbols were a priority. I was never jealous about this, because she had to work two jobs to continuously acquire her "stuff." Eventually, she was giving her things away once they no longer brought her satisfaction. These things didn't bring her happiness at all; yet, she continued to search for a more expensive purse, a more expensive car - and it became an elusive, material hunt.
All that Glitters wants you to remember to see beyond the exterior of things and people, and to pay attention if you are being seduced into believing that beauty equals Goodness and Truth. Expensive paint jobs and repairs can easily cover a lot of deceit; once the sparkle and shine has worn off, you will eventually see the true heart, the true nature of the House. You may find Goodness and Truth; or you may be staring at an empty, cracked building, unable to hold anything of value.
The idea that a bigger house, a more expensive car, or a prestigious job will bring happiness, is an idea made from smoke and mirrors. When the glitter fades, would you still be happy and content on the inside?