full sized box spring and mattress (Keizer)

One full sized foam mattress made by "Green Choice", in OK condition: no odors but is several years old and has a light discoloation on the superior surface, and one small rip in the center of the mattress.
Is still quite comfortable, perhaps more comfortable than the replacement.
One full sized box spring in good condition, no obvious structural problems, but it is a shallow box spring only 5 inches high.