Cap. 16 Art. 1486Supplement in money.

(1) The contract shall not cease to be a contract of exchange, even though the value of the things which the parties bind themselves to give to one another has been stated or one of the parties has bound himself to give together with the thing, a supplement in money.

(2) Nevertheless, if the sum of money which one of the parties binds himself to pay exceeds the value of the thing which such party binds himself to give, the contract shall be deemed to be a contract of purchase and sale in regard to all the things which the parties have bound themselves to give to one another.