The fees are set out in Article 46 and Annex 2 of the Ordinance on Identity Documents for Swiss Nationals (SR 143.116). These are payable in the currency determined by the Swiss representation.

Amount in TND
  Identity card Passport 10 Combined offer (Passport and ID Card Provisional Passport
Children and adolescents up to the age of 18 114.000 201.000  252.000 290.000
Adults 216.000  433.000  484.000 290.000
Swiss representation's delivery fee 7.000 7.000 7.000 -
Passport and identity card

The passport 10 and the ID card are posted separately (different places of production)