I stopped at a local Costco last week and browsed the meat section. They only had choice grade packers, and no prime. This was the first time I have ever seen choice grade packers at any of the Costcos in my area. And the price for choice was $4.69/lb o_O
They look beautiful! Your process cleans them up very nicely. I keep searching for older cast iron at garage sales, etc in my area, but nothing ever comes up. Doesn't stop me from continuing to look though.