Deal with interpreters directly
Take bilingual and multilingual communication seriously.
To get the best cost-quality ratio, ask your consultant interpreter for advice.
If you ask a consultant interpreter to put together your team of interpreters you will find that the cost is less than if you go to another intermediary.
Other intermediaries subcontract interpretation and take a commission on interpreter fees or the total cost of interpreters. The level of commission may vary from 20% to 100% of the costs.
To optimize their profit, other intermediaries may end up hiring non-professional interpreters.