I bought 2 packs of their rotary blades awhile back. Each pack had 2 blades, so there were 4 blades total. Every one of them skipped threads to the point of being more trouble than it was worth. Maybe I just happened across 2 bad packs ... I don't know.
I do like their little LED lights ... the blue rectangular ones that have a bunch of LED bulbs in the front, and 3 more bulbs at the bottom, so you can shine it outwards or downwards, depending on what you're doing. It has both a swivel hanger and a magnet on the back. They're great for camping!
I gave my dad one a couple of Christmases ago as a stocking stuffer, and he loved it so much that he made the 30-minute drive to the store and bought a bunch of them. He and I both are "flashlight junkies".
I think they're normally $2.99 or $3.99, but I've seen coupons and sales on them. They include the batteries, too!