Ryan, I've been selling children's books on Ebay for several years now. I always find that after Christmas, I'm so burnt out and exhausted between the doing all the holiday stuff for my family, taking care of my daughter, working a full time job and those late nights filling orders, that I need a few months off just to recuperate.
Actually in 2007, I stopped selling in March, intending just to take a short break, and I haven't gotten back to it yet! I know that's bad, but that's when I started researching the t-shirts. In addition, I always find the months of January, February and part of March are just draining because of the icy cold, dreary weather. After that, I am hoping to get a Spring Renewal of Energy to resume the book selling, and add the t-shirt selling, on Ebay.
I think it's OK to give into the slump a little, just as long as your bills are paid!
Melissa