It can be frustrating when you beat a competitor’s price, yet they keep selling and yours does not. It happens. And trying to figure out how to attract those sales can be hard. But when looking for an answer, i do not believe there is one factor or one smoking gun when figuring out why. It is more likely to be multiple factors all at play. Below are some thoughts that might be helpful.
One reason must be visibility, because apparently these items are in demand when so many other sellers have hundreds sold. So i would concentrate my efforts on trying to raise the item up in Search order. It is a good starting point. With many sellers listing these same devices, the greater your visibility the better your chances to sell.
Ebay doesn't make a mystery of how to improve one’s placement in Search. They cite a number of actions regarding how to maximize your position. Below is a link with those Best Listing Practices outlined. Things like free shipping, having a buyer-friendly return policy, and accurate Item Specifics all play a role. Some you are already implementing.
https://pages.ebay.com/seller-center/listing-and-marketing/listing-best-practices.html
Note: When looking at your Completed listings, i see you did not offer returns or free shipping and your current listings do. As this change appears recent, hoping they make a difference soon, moving forward.
Another way to increase visibility is with SEO. Below is a link to eBay suggestions on how to improve Search Engine Optimization. Garnering traffic from places like Google and Bing, as well as supporting eBay’s Cassini, could help raise your placement and increase viewers. (I would pay special attention to your titles. Some have punctuation, which can devalue a title and halt inclusion. Others have redundant words, like Brand New, which already appears on the thumbnail in Search results, directly below the title.)
https://pages.ebay.com/seller-center/listing-and-marketing/boost-traffic-with-seo.html
Every small effort helps in the overall—to get some way to offset the fact that the more sales your competition gets, the higher they will move in Search. It is no secret that sales beget sales. Using Promoted listings also helps offset the problem, but the competition also uses Promoted listings. Not everyone gets the top spot.
One last thought, Your listings are really good. Well written, professional. There is one issue with some of your pictures you may want to correct. They are in violation of the Picture policy, see below. Added text is not allowed. Such a violation could drop your listing to the bottom of Search. Other than this issue, your listings are solid, so I would think sales will pick up soon with the gift giving season approaching. Your recent slump might also just be the ebb and flow of retail. Summers can see a decline in sales. We saw a great surge in sales during the pandemic, now things may be leveling off. In any regard, wish you much success and hope sales increase soon.
https://www.ebay.com/help/policies/listing-policies/picture-policy?id=4370
