. "The estimating a thing according to its extrinsic (money) value , valuation , appraisement : aestimatio frumenti, the determination of the prœtor ( legate or quœstor ), how much ready money one should pay , instead of the corn which he was to furnish ." . "The estimating a thing according to its extrinsic (money) value , valuation , appraisement : aestimatio frumenti, the determination of the prœtor ( legate or quœstor ), how much ready money one should pay , instead of the corn which he was to furnish ." . .