Don't feel bad about the joke, that's how we think of ourselves too (I work at Priceonomics). I think it's actually an interesting advantage versus a content site that just thinks of themselves as a content site.
For those of you who missed the story of Priceonomics' pivot, Techcrunch has a good writeup: http://techcrunch.com/2013/11/26/priceonomics-data-services/