You must first ask yourself how much do I want to spend on the product or what is the most I am willing to spend on the product for the use I plan to get out of this product? Once you've determined that number and have found a few items that fit your criteria, then you must compare to see which item carries the most value.
For example, if I am willing to spend $500 on a leather jacket that I plan to wear for 6 months out of the year for about 10 times a month, then I should expect to invest ideally $8.30 every time I wear this jacket. Now, if I didn't currently know how I could afford to spend $500 on a leather jacket, then I may opt for the $100 jacket but to know which is the better investment, I have to do the formula. $100/6=16.67/10=$1.66 per wear. So in this scenario the less expensive jacket is the better investment.
But what if I planned on wearing this jacket for at least 3 years? Considering that the $100 jacket will need to be replaced every 6 months (assuming it is not real leather or is made of poor faux leather quality) $100 x 6 (3 years)= $600. In this scenario, the real leather jacket is the better investment. This doesn't include if either item is on sale either. So just because something is less expensive doesn't mean you're saving money and just because something is more expensive, it doesn't mean it holds more value.
The way to get an infinite return on your investment is what happens once you wear the item. If you've worn it so long that it brings positive memories that puts you in a better mood each time you wear it, then you've gotten an infinite return because you may not ever want to replace the item.
If it builds your confidence level when wearing it or if it helps you achieve a goal such as demanding the respect you deserve, or getting the job you desire, then you've gotten an infinite return on your investment. In other words, the purchase of that item has helped you achieve something that is priceless, which should be your ultimate goal when making any wardrobe investment.
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