How long ago did they stop making Grade 1 Azo. About 2 years ago I bought a bunch of photo stuff from a guy that was going out of buisness. He had Grades 1,2&3. I bought all he had. @ 450 sheets of #3, 200 of #2 and 240 of #1. Payed @ $1.00 a box. Read it and weep.