Hello,
I just called yesterday to inquire about the upgrade price with my select discount. I too am sailing on a 10 day in October. The Celebrity Rep quoted me $424.40 for both my self and my husband, so $212.20 additional per person. I told him I had to ponder this...I remember the days when my onboard credit completely covered this and then some. I'm thinking I may not upgrade as our cruise is very port intensive with an overnight in Alexandria. I may just pay for the upcharge per drink. It may come out significantly cheaper! Hope this helps!