There are very nice things on the market, I usually charge the right amount of money. So if I want to buy something I ask myself if I really need it. In addition to that, I care a lot about quality, I see how good the product looks, and sometimes, I don't buy it. I get home and do some research. This way I make sure I spend my money on something that is quality.
Although, sometimes it's difficult because I can't find reviews, so I have to experiment.