Nothing is ever "too saturated" for a good idea.

The question is, WHO are you marketing to and WHY should they buy from you?

Dollar Shave Club has a different market niche than those who buy from Walmart, or high end buyers who want to go into a store and buy a nice safety razor from a live human with expertise.

What can you bring to the Cigar of the Month idea that isn't just "throwing a cigar you found at them"? Yes, the barrier to entry in setting up a subscription site isn't high. So the competitive advantage lies elsewhere.