I think it's just the time of the year - on holidays, spending more time with family, people away, not so many at work staring at shopping screens wasting time not doing their job.  I am making no sales from my website as well as eBay.

 

Usually my site and eBay tend to mirror each other.

 

I 100% agree on fluctuations but the extremity of them is unusual. Even bitcoin isn't that volatile haha