translate English to French: However, according to the EIB’s operational departments, the opening-up of contracts to international competitive bidding should ultimately have beneficial effects on the cost of operations by, for instance, curbing unlawful agreements between national firms.
La différence de coûts et de délais est importante, par contre, entre la procédure d'appel d'offre (nationale ou internationale) et la procédure de gré à gré.