If you're desperate, then 50p isn't that greater a price. But it's still a rip-off. If there's only you willing to pay, then that's ok. But if you get to the front of the queue and while you're waiting, someone else pays 50p. You're then not at the front. In effect, you've paid the extra 50p, just to feel smug that you 'may have' got answered quicker, than had you not paid their ransom demand.
Pay the 50p ransom gets you there quicker = NO!
Pay the 50p ransom gets you there no quicker. But you feel better for saving time = Maybe.
If they can really answer some people quicker, just because they pay extra. Then they are in a position to answer everyone a little quicker. Or they have people in reserve, just in case more than one person pays their demand.
The word 'ransom' is used above, as they are holding your perception of time against your will to wait. We think of a ransom as being paid in one lump sum. The notion that 50p isn't much and cannot therefore be a ransom, doesn't pan out. As the demand is not open just to you alone. But multiple 50ps, paid in multiples, still amounts to a hoard. And since they're playing with separate multiple minds, there's far less chance that the multiple-minds will become a hive-mind and rebel/not continue paying the ransom.
Also, by paying their ransom; everyone who does so, makes an underclass of those who do not. Purposely delaying people, then 'rewarding' them if they pay extra to be where they would have been, if you had not delayed them in the first place, is pure skullduggery. Plus those who have resisted thus far from paying their portion of the ransom, may well feel like an underclass and be more amenable to pay-up in future.
There is no way to disprove their claimed practices and services, as any data will have to come from them through them. Pay if you feel vulnerable or be part of a hive-mind and rebel against the tyrant. It's up to you and your will to wait. Or your will to capitulate to their demand, that you shall wait however long they wish you to, before giving you the option to progress no further and having you pay for the experience.