Offer, prices and acceptance. Unless otherwise provided, the offer is valid for one month. The prices are established net of taxes, customs duties, costs of transport, insurance and packing, and are billed pursuant to the contractual terms. Payments are made in euros unless otherwise specified in the contract. If, in order to satisfy the Purchaser's requests, specific prior studies are required for establishing the offer, but this of fer is not followed by an order, these studies shall be subject to a specific charge.
