winsoar, no it is not. I believe that the threshold is 20 products - because that's the least number of products I've found success with. Ideally, you should have 50 products. It is just very hard to rank high with a feed that only lists one product. To be on the first page of Product search results with a single product your product needs to be unique... however, when it is unique, fat chance is that nobody will come to Product search to look for it Is it more like e-book or more like something I could put on my mantelpiece, what you're selling?
Well its fine Whatever it is either one product or multiple products you won't be worry for that. I have seen all type of example here.