43. The purchase or replacement cost of a visual aid referred to in the second paragraph of section 5 or of any of its basic components or supplements shall be determined as follows:(1) the cost price of the visual aid, including that of its basic components and, where applicable, that of its basic supplements;
(2) the taxes, where applicable, and the cost of shipping the visual aid between the supplier’s establishment where the visual aid is available and which is closest to the institution loaning the visual aid and the location of that institution or the address of the insured person, according to the loaning institution’s instructions, shall be added to the cost resulting from the application of paragraph 1; and
(3) customs fees, customs clearance fees and the currency exchange rate applicable at the time of the purchase or replacement, by a recognized institution, of the visual aid or of its component or supplement, from a foreign supplier shall be added, where applicable, to the cost resulting from the application of paragraph 2.