I think most seller know there is a light that turns on/off I have gone a week without hardly a sale then got 5 in a hour. Personally yes I would rather smooth regular sales but TBH it does not bother me that much. The last week for me has been very slow but what I look at is the monthly sales and as long as I sell a certain amount each month all is good. Online sales are finicky and even more on Ebay, for some reason, and will go up and down but it is the overall picture Monthly/quarterly/yearly you need to look at really