Thank you very much, everyone! This is a huge help. I will sell the unopened roll for sure. I may use the opened roll in some of my pinhole experiments and see if my local photo lab would be willing to develop the paper for me.
I'd love to develop color, but am told it has to be done in total darkness. Also, one of my friends was telling me about a friend of one of her friends who died from inhaling color processing chemicals. My apartment lacks good enough ventilation for me to feel secure using the chemicals. And my girlfriend may not really approve, either. She tolerates the black and white work, mostly.