those were for some locally raised, all natural, pork from a local butcher/farm., other, cheaper, non enhanced pork is widely available(restaurant depot, caputos, brookhaven, peoria meatpacking to name just a few), and thats what I use 90% of the time. The expensive stuff is for special smokes, etc.
non-enhanced spares are about $1.49-$1.79 all the time at those other places I shop at. There are lots of choices in Chicagoland (keep in mind I live 80 miles west of Chicago, and simply put in the effort to seek out quality pork).
either way, as long as it works and you folks are happy with it is all that matters.