IANAL, and this advice is U.S.-centric 'cause that's where I live and work... but this is how my lawyer explained it to me for my own photography business... If the picture was taken on private property and the store is identifiable, you do need to get a location release in order to be able to sell it. If, however, the store is not identifiable, you can go ahead and use it as you see fit with no need to acquire additional releases.

Of course this correctly brings up the question of 'identifiable to whom?' Generally the test is that if the image is inflammatory or libelous towards the business owner and is not being used in an editorial capacity then the test is 'is the image identifiable to the owner of the business.' If it is not an inflammatory or libelous photograph then the legal test is less strict- 'is the business identifiable to the general public.'

Now I will say again, IANAL, this is U.S.-centric advice, and is general advice... The laws and policies in your specific jurisdiction may vary from these general guidelines, so do your homework and/or hire a lawyer if need-be.