They're $10 each but totally worth it. Pure, no human sounds, and over an hour long each. The woman who records them is a professional and her recordings are used by various industries, from film to video game developers.
It is something I am considering working towards chubs, if you head to the site and drop your email in, or just shoot me one direct I will keep you in the loop with developments.
I agree for now the target user is a quick fix audience, but in future who knows!