"Fast drug is named because it makes the universe (to its user) appear to move much more quickly; the drug slows down personal metabolism at a ratio of approximately 60 to 1. Users are extremely vulnerable because they are living at such a slow rate; but physical aging is also slowed, and the need for consumable supplies is reduced, thus allowing conservation of air and food. Fast drug takes effect immediately upon ingestion; one dose lasts for 60 days, making that time appear to be only one day. " - TTB, pg 106
"Fast Drug = Cr 200; Fast Antidote = Cr 900" - TTB, pg. 105
So 1 person sitting in a chair for 60 days (waiting for the drug to wear off) would age 24 hours, consume 24 hours worth of oxygen, need 24 hours worth of food. If the drug were administered at the start of a 14 day trip [the typical 2 weeks normal life support for a 1 week jump], and the antidote administered at the destination, then 1 person would need 14 x 24 / 60 =5.6 hours worth of air. That qualifies as a short term trip in a shuttle where extended "life support" costs are not charged. You can survive 6 hours without food or water.
Even if you DO NEED Life Support, the Cr 2000 for 14 x 24 = 336 hours will cover 336/5.6 = 60 people for a per person life support cost of only Cr 2000 / 60 = Cr 34 in Fast Drug Passage.