The honest answer is that a car-service quote has two layers: the fare itself, and the items that sit outside it. With JetBlack, the written quote is the fare for the trip; sitting outside it are tolls, governmental fees, on-trip amenities, and the tip. The tip is suggested at 20% and is not included in the fare — that single fact explains most “hidden fee” surprises, because riders who assumed the quote included a tip find it added at the end.
The other items are just as concrete. Tolls are charged as incurred on the route taken. Child seats run about $35 per seat, confirmed at booking — they are an add-on, not part of the base fare. Meet-and-greet is an extra over the default express curbside pickup. And cancellation has its own fixed total: free before confirmation, and $31 after confirmation, made up of a $25 fee plus $5 in fees plus a $1 technology fee. None of these is hidden once named; the test of any operator is whether it names them before you pay.

How to read any quote
Ask for the total in writing and ask four questions: are tolls included or added, is the tip included or suggested separately, which extras are on this booking, and what cancellation costs. A quote that answers all four has no hidden layer left. A quote that dodges any of them is where the surprise lives.
Hourly hire works the same way: the hourly floor — sedan from $44 per hour with a 3-hour minimum — is the rate, and tolls, tip, fees, and amenities sit outside it unless the written quote says otherwise.
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Booking advice
Get the breakdown in writing before you travel, and keep it: if the final charge differs from the written total for any reason other than a change you requested, the written quote is your evidence.