What an agent charges
Agency fees are counted in months of rent, not as a percentage. On top of that there may be a viewing fee, paid before you even step inside. Both are separate from the deposit and the months of rent paid upfront, which go to the owner and not to the agent.
On 4MURS these four amounts are fields on the listing: deposit, months upfront, viewing fee, agency fee. A listing that charges nothing says so explicitly rather than staying silent.