Is the Apple Watch accessories that have been popular in recent years already a sunset?

: I vaguely remember that I found products related to Apple watch bands and watch cases when I was selecting products more than a year ago. At that time, according to my preliminary research, the cost price of a product was only a few dollars, and the selling price was about 10 US dollars. With the low shipping cost of small items, I estimated that there was a 50% profit at that time. It’s a pity that it was an infringing product and I didn’t dare to try to make it , so I gave up. Now I see that the previous 10 products of the same category have basically been replaced by other companies. They used to be infringing products, and I don’t know if they are still infringing products now.

In the past two years, I have seen people recommending this product. I didn't expect it to be more and more popular, but the profit margin is also smaller. If I had done it at the beginning, I wonder if I could make money.
Is it still worth doing now?

: These two categories are all about making quick money. Because the products that sell well are infringing products, and everyone knows about infringement.
After the big names like IYOU were caught last year, there were still some infringing products in this market, but they were cleared out soon. Now it has gradually turned from infringing to unofficial. However, since it is an accessory and is limited by Apple Watch, there are only a few products that are copied and stitched together.
And because there are so many Chinese sellers doing this in recent years, the competition is quite fierce. A single product worth 9 or 10 US dollars has a CPC of up to 2 US dollars, and there are still a lot of idiots who are just trying to make money for their brothers-in-law and foolishly run ads. If you want to do well in these two categories, you have to stay within Amazon's red line from the early stage to the later stage. You have to brush orders and do keyword ranking. If you stop or reduce advertising promotion, others will immediately take your place. It is very difficult to do. Even if you have a firm ranking for a certain big word, once you reduce your budget, you will immediately see your sales drop in a state you can't imagine.
Please be kind and don't touch these things.