They need to include a 1-2 sentence description of the submission, the OS release the product runs on, and if it is source, binary, newsletter, etc. Z, or OldObjC.wn.tar. User Reference Manual for Objective-C which is available from Stepstone Corporation. There are some differences between Stepstone's Objective-C and NeXT's. A retail price list may be obtained by contacting NeXT at the number or address mentioned in a previous question.
Educational prices vary depending upon the university.
The typical educational discount is between twenty and thirty percent. NeXT offers registered developers a significant discount. Also possibly from your university if you are a student, faculty or staff. Cambridge Electronics is now selling NeXT systems. You may register to go to a 5 day developer's camp either in Redwood City, CA, Chicago, IL, Westport, CT, and Toronto, Canada.