Apprentice 1 (4 hours delay)
Apprentice 2 (8 hours delay)
Apprentice 3 (1 day delay)
Apprentice 4 (3 days delay) (2 days for radicals)
Guru 1 (7 days delay)
Guru 2 (14 days delay)
Master (30 days delay)
Enlightened (120 days delay)
Burned (Never returns)

Getting an item wrong bumps it down 2 levels.