I have bought 100 iPhone 5/5S cases from a wholesale in china expecting to make around £200 profit by selling them individually on ebay, in person etc. Unfortunately none have been sold and I have tried selling the whole lot to shops at a cheaper price but also this way they didnt get sold.
Selling any product including "iPhone cases" on websites with high competition like Ebay is surely not an easy mission. There are hundreds of sellers on Ebay and other websites who are already selling cases. If you need to get some sales, you need at least one of the following:
1. High reputation, reviews or feedbacks on the website that you are selling on.
2. The product that you are selling must be unique in some way or simply not found anywhere else.
3. If your products are featured at your own website, then that website of yours must be ranked properly online and marketed decently around social media networks.
In your case, a possible approach would be to create your own website to sell your products on or work as an affiliate marketer for other big sellers in exchange for commissions.
Depending on your budget, you need to draw the right plan around. If you have a good budget to invest in your business, then creating a website for yourself is a must. Otherwise, you need to rely on other websites and seek to provide unique or special products to get an edge around.
Hope that helps!
This is a common problem, I stay away from technology hardware, because they quickly become dated. In your case this is not an investment that you are going to make or lose a considerable amount of money on. EBAY has a considerable number of I phone products on it, I would drop my price on these and move on.
These phone cases are not for the latest version of iphone and so therefore most of your sales will come from existing users looking to replace their current/old/broken case. As mentioned earlier, it is difficult to compete in the online space or at other mobile-phone or electronics shops.
Perhaps a different sales channel may help, like convenience stores, petro shops, or coffee shops. These are places where people are more likely to impulse shop or pick up a convenience item.