Innovative idea, why was this not designed before...
The bottom line is I think the killer, for now, would be that noone wants to put this with 13 likes. If I see a coffee shop with 13 likes its goes this way in my hand "damn I wish I would try but they only have 13 likes? Maybe their coffee sucks, where is the nearest Starbucks?". You see, the problem is that most people will compare this number of likes to other similar. So someone running small business does not want to show how few likes they have. Big business, on the other hand I dont think would care about this, unless its starbucks or hand of other large companies, but most likely than not you wont see your local coffee shop with the one (thats why I believe they price it so high, comparing to something reasonable like $99).