The tenderloin in the fillet, so obviously it's going to be expensive. The first one is off colored because it's nearing it's expiration date. That's why it's marked down do much. Notice the "packed on" date is missing on the Special label. Sams Club website has Choice tenderloin listed at about $15/lb, cheaper if you buy the whole thing. Not sure why it's so much cheaper.
Grass fed ground beef is $8/lb at the local butcher shop. They've gone from one grass fed meat case to three in the last year. Hard to wrap my head around.