The brightness is difficult to evaluate due to the directionality of the beams. It doesn't look too bad, but I didn't think LEDs had yet hit 4x better efficiencies than CFLs (7wCFL also claim 40W equivalences, and they're omnidirectional.)
The clear container is glass...
At worst, this is 60 white LEDs with usable leads for $15, which isn't bad. At best I have a new candidate for some of my lights. I wish they had made the bulbs somewhat smaller to match normal candelabra base incandescents. Instead, they're the same size as the CFL candelabra lamps: huge.




































It dimmed pretty smoothly to maybe half brightness on both digital and analog dimmers. Much smoother than most dimmable fluorescents. But you're right, even at full brightness it's nowhere near equivalent to 40 watts. It's on the cool end of the warm spectrum.
Wal-mart had all kinds of these, in warm white and cool white, from these 1.5 watt candelabra bulbs for about $5US up to 5 watt PAR-style floodlights for about $20US. Mine had an E26 ("medium") base.
I poked around on the net a bit and popular consensus seems to be that at best these cheap LED's are about the same efficiency as a compact fluorescent. So this is about equivalent to a 1.5 watt CF or a 6 watt incandescent.
So I'd say these are still a novelty, not a practical lamp for most applications. I'll probably tear min e down for parts too! Thanks for your original post.
Like the CFL I dissected in my instructable, the glass has a plastic rim that is press fit into the bottom. With a bit of care and squeezing (or a saw), you can pry apart the two pieces with a flat screwdriver or equivalent. I did crack the glass when I did this; I guess I wasn't careful enough.