You are exactly where I am. I took a good hard eyes wide open look at my eBay business and have decided it just isn't worth it anymore. Yeah I know, shift to a different 'niche' or category. Well I've been at this since 2008 and have made multiple shifts over those years just to keep ahead. One category goes dead, find a new one and ride it till it dies. Simply put, I just don't have the desire to make another shift that will only last a year or two at most. It isn't fun anymore. It doesn't make much money anymore. It isn't really a good business for small one person businesses unless you want to spend tons of hours 6+ days a week sourcing, listing and shipping. It used to be fun, profitable and satisfying. Not anymore.
So I have stopped all scouting, have all of my inventory listed and up for sale. I will continue to ship orders that come in and adjust prices to clear things out but once I hit a level of sales of that stuff that is a waste of time, I'm shutting it down and am out of the reselling business. It was a great ride but everything comes to an end and for me, reselling has hit that time.
I have other ideas for things to do that will fulfill things in me that reselling doesn't. For me, buying junk to sell for a profit is a very unfulfilling way to make a dollar. It took me a long time to finally face the fact that as a reseller, I am nothing more than a middle-man. There are better ways that feed the soul to make a buck. I will find that.
