I still remember there was a time when selling used products was a pain. Before the internet, selling used products such as electronics, furniture, watches, clothes, etc. was not easy. It was hard to find auctions and/or any buyers.
The internet has changed the things.
Now you can sell everything online. There are hundreds and hundreds of websites, auction sites, and marketplaces where you can buy and sell used products painlessly. If you are not computer-savvy, try eBay. It is the best place to auction used stuff.
There is, however, an issue. Getting the best price for your products is still a big challenge. For instance, if you list your watch on an auction site with a reserve price that is too low, you might end up selling it for less. A good idea is to see the price my watch feature on a website and see the actual worth of your watch. It applies to other products.
Once you know the estimated market price of your product, you can then avoid scammers by setting a realistic reserve price on the auction site. Besides, it will also help you with negotiating the price with the buyer. You are in a better position to bargain if you know the value and the worth of your product.