According to an article posted by emarketer.com, customers who directly input an URL or bookmark a page are likely to spend more and peruse a page longer than those who visit sites via paid and organic search results. 

The conversation rate for a direct visitor is 3.3% and the average order is $170, whereas indirect visitors are more more likely to bounce around from site to site, view them at shorter intervals, and spend less overall.

However, the general marketing strategy for any e-commerce site is to encompass various channels to increase overall traffic and sales.