Yep.. "raw cost" is salesman speak for "Oh, you want that ? Oh, that will cost you more."
- Oh, you want bike racks on the outside of the cars because there are too many bikes inside and people cant get in ?  yea, that will cost you more.
- Oh, you want a driver / operator on the rail cars for added safety ? Yea, that will cost you more.
- Oh, you want an emergency exit ladder thing from the rail platforms in case you have to evacuate ? Yea, that will cost you more.
- Oh, you actually want public bathrooms on the rail platforms ? yea, that will cost you more.
- Oh, you want emergency stop buttons on the rail cars ? Yea, that will cost you more.
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That forever tax to me implies they underestimated the ridership and the annual cost to run the rail. They have no way to pay for annual operating expenses. Originally estimated at $150 Million a year (the same the FULL bus system costs to run for the WHOLE island). I bet rail magically comes up to close to $300 million a year on Ops Cost