Radio Shack wasn't known for their high quality. These lasers that may have cost a lot back in 1994 are now very inexpensive and of higher output powers. It is likely not worth your time trying to sell it.
I found this old post with the same laser. Apparently at the time the laser cost $79.99, has a range of 65 feet and a plastic host which is glued so hard to tinker with. The thread also has a pic of the inside. Cool piece for sure.
Yes, but you can buy a laser pointer that does as well if not better for $2.00 new today. It is a used old laser pointer. How much do you think a used cell phone from the same period would be worth to anybody now?
Yes it would.
I'd keep it, RadioShack products have a cult following.
I've got a clone TRS-80 computer made by an Aussie company called Dick Smith that was our version of RadioShack and I'm keeping it for sentimental reasons.