Friend did 1mil...Took him about 2 months I think. 3 weeks of gold sp ticket included. We were doing about 20/25k a day (big part of the guild was farming so we were taking shifts

).
I farmed 810k sp in a month (3 weeks of gold ticket/gold sp ticket) on my warrior/bard (now warrior/rogue). I had to delvl every day from like 25/26 back to 20-22.
I used my wiz to plvl my (and my friends) ticket hours. I got up to 6.5k+/hour during that time.