a. [ad. L. æstimātōrius, f. æstimātor: see prec.] (See quots.)
17361800. Bailey, Æstimatory, of or belonging to pricing or valuing; for a price or estimation.
1818. Colebrooke, Treat. Obligations & Contracts, I. 18. Estimatory contract (binding in the alternative to sell for a fixt price or return the goods).