Tried that number but after another 30 minutes on the phone (after yesterday's 30-plus minutes), JetBlue is claiming not to have received my request and they won't let me resubmit it. They just kept encouraging me to spend $1,250 to meet the challenge.
I already booked three international flights on JetBlue, expecting that I'd be able to try out Mosaic. Not real impressed with JetBlue so far — an hour on the phone, several email "replies" that were just canned responses, etc. Maybe I should stick with AA and UA.
(As an added bonus, my seat assignment on the first flight seems to have disappeared, and now there are only middles left. I guess I'll be paying $60 for an EMS seat or playing that free-EMS-at-checkin lottery that B6 types talk about.)