Now days it has become possible to see 3d movies while sitting at home easily if we buy 3d glasses and watch 3d movies by buying movie dvd and watch it by 3d glasses.
more specifically it also depends on the features of pair of 3d glasses it can provide to the user.
Infact there are two ways of buying pair of samsung 3d 40 inches glasses first you can buy it on first hand and it will cost you near 300$ or above or may be less than it but because of new technology of 3d world its cost is high.
the second way is to buy second hand or used pair of 3d glasses,
by this way it will cost much less than buying it brand new.
you can do e-shopping for this purpose.