Algorithms are set up so that sales beget sales. They are also set up to allow certain districts in the country to see items in certain districts, I have no idea how they set up their districts, but I know they do that. A good friend of mine, who recently passed, worked on creating algorithms years ago for Amazon, and I believe they all just followed suit after those first few were set up. She gave me some info that has worked well with one of my Etsy shops...I'm place holding this eBay shop until I get the time to work on it...but here were her suggestions for selling, and like I said, it worked for me on Etsy, my first shop there sold more than 5,000 items in a little more than 4 years...these were vintage, sometimes expensive, one of a kind things...and anyone who knows anything about Etsy knows they hate vintage and don't give it any sort of boost other than what the algorithms allow. First is to list, list, list...that brings you higher in search. Second is to work on your shop every day even if it's just to edit something. Third is to run sales, and the more followers you get the better that works. (I will list something on Monday morning and it often sells by Monday evening on Etsy because I have a couple thousand followers who get notice of something new being listed. I don't know how eBay does that but I'm sure it's something similar) Fourth was to advertise with the site you're on. (I do ads on Etsy and piddle with them during the day, raising my spend amount then lowering it after I have a certain number of sales.)
Five is to put some of your listings as multiples and with others list them separately. (that's part of your sales beget sales)
There were a couple of other things she told me to always do, but those were the most important. So I'd say that something in those algorithm settings probably kicked in for you. But for the life of me I can't understand why you'd "contact" eBay to complain about getting sales. Just enjoy that extra money and head to the grocery store or your favorite resale shop.
