I bought two packages of 10 of these at my corner CVS for under $6.00---a buy one get 50% off on a second deal. I thought they were worth a try.
These blades gave me reason to smile. Treets are my favorite blades for the Gem SE shavers, but I found this blade very similar in quality, sharpness and shave-ability. I'm pretty sure that in a blind test I wouldn't be able to tell them apart.
I like these blades better than the Gem Stainless SE blades, including the Ted Pella blades. For whatever reason, I get a smoother, sharper shave from the carbon blades. YMMV with blades, of course.
They come in that nice plastic dispenser which also banks used blades.
I don't get great longevity from any SE blades, it seems---these are about average.