I found them for less than $0.10 a bullet in a 250 bulk pack and got another 100 with a set of Hornady .223 dies. I was excited to use them since so many people heap praise on them, but they didn't agree with my rifle.
I eventually tried them with downloaded "bunny loads" that I could let my younger kids use (13.0g IMR 4198, CCI 400, R-P brass). Turns out they were much more accurate in reduced loads in my rifle than they ever were with standard loads and those "bunny loads" are an absolute hoot to shoot. At 2,100 fps it puts it squarely between a .22 WMR and .22 Hornet, has little to no recoil, less report and decent accuracy (sub 1.5 MOA @ 100y).
So, I'm a fan of them for a range / plinking / youth load, but I couldn't get them to group for crap with anything else.
