I've been looking at a newer phone that will work with tracfone... So for a review site I'd like to be able to select just the phones that match my needs and do a side-by side comparison of features. (screen size/resolution, capacity, flash option, etc...)
Saw this recently, this might give some inspiration - https://www.productchart.com/ pair that sort of filtering with some selection/report options and reviews would make it awesome.
If it turns a profit, keep it going until you can find a sucker willing to buy you out.
If you have fun running it and the operating costs are manageable, keep it running on the off chance that you find a way to monetize it.
And if it's fun and profitable, you've got it made.