EUcarhire.com

yes i see you have already made a search

if it does not say any extra charges then there are none. You can choose another supplier, if you are not happy with AVIS

I see no mention of any extra gees, so there are none.

very basic yes. You can always add more at the desk

Example below from AVIS:- Insurance coverage Collision damage waiver (CDW): Includes 20% tax; Excess 840 EUR Personal accident insurance: 5.8 EUR per day. (Excludes tax) Theft waiver (TW): Includes 20% tax; Excess 840 EUR Third party liability protection (TP): Includes 20% tax The Excess Liability is the amount determined by the car rental supplier for which you can be held liable in case of damage/theft of the vehicle. Damage to or loss of tyres, windscreens, glass and undercarriage may not be covered by the CDW (Collision Damage Waiver). Please check with the rental agent at the desk. If you purchase the Excess Reimbursement Insurance from a third party, the main driver will be required to present their credit card at the rental desk in order for the car rental agent to authorize the deposit.