I actually acquired an entire case of these YEARS ago at a local auction.  Found that I still have 4 remaining and they are all sealed and in near mint condition.  An unique gift for the serious collector....

 

These  are sealed and from Radio Shack.  It includes 2 software titles along with a "free" comic book and cassette.

TMNT  World Tour

 

Computer driven coloring program with 30 pictures included.  Educational with descriptions of locations in the World Tour.  Print custom banners, calenders, pictures, or personalized stories

TMNT  Video Game

Probably similar to NES or other gaming platform

Turtles comic by Archie Comics

Coming out of their Shells

The cassette tape of their music release, sealed within the box.  I've seen opened copies of the tape sell by themselves for $7-$8