These Glasses actually Work, - I forget what I paid but it was only a few quid.
The glasses took a while to arrive so, don't be afraid to email the seller because he may be slow, which is NOT on.!
However, its still well worth the wait, even tho it may take a week, instead of the usual 48hrs with other sellers.
The Glasses, are cheap but hey, they actually work with all (Passive 3D TVs ONLY). Will NOT be a substitute for shutter Glasses.
TYPE Of 3D-TVs That use "Passive" technology are (LG, Panasonic and Toshiba) so far, (Active Technology, used By Samsung, Sony, and others).
So, if your 3D-TV uses "Active" these Glasses will NOT work, They are great to have in your pocket to take to the cinema. (for sure)...
As the Cinema, uses "Passive" Technology too.! and they are better than the glasses at the cinema and also more comfortable.
Thanks for reading! - :D