I monitor a few dozen ecom sites, and sales are normal for this period. However, for whatever reason I see sites go through slow periods that are out of the norm and can be explained, Not change it traffic etc . . . But these periods are short term and sales return to norm pretty quickly. We look at those as "what was that" in the rear view mirror and move on.
sales are quite strong for february for us right now. typically this month is slow...people are just now getting hit with credit card bills from Christmas. I would expect for sectors targeting consumers it will be slow. Our business is 80% B2B which would explain our strong showing. If your target market is the general public...expect february to be one of your slowest months.