We can't say "buy source-code snippets" for a couple of reasons - first, we have a mix of free and commercial open-source, and second we do not publish "snippet" sized packages (see our publication guidelines). Our goal is to create an inventory of curated, professional solutions to common needs in software development, whether free or commercial (as long as we verify the publisher is committed to supporting it).
You are probably right about the 'discovery-service' part as a user, we don't use that messaging in our homepage anymore.