I have had a basic store in a single category for several years now and have seen sales ebb and flow as you would expect. I am not entirely sure it made much difference in volume of sales but back when I took out the basic subscription it had more value in increased listings and lower fees. 

I have another ID with a different range of products that I am trying to grow and although it is going quite well, I am wondering now if it is worth it to get another basic store. The main reason is that it would allow me to do a sales campaign across the store, something that you cannot do with a regular account I believe. Has anyone got any recent experiences where they have found a basic store has made any positive differences or even examples of a negative difference?