What is Catching Bargain?

Legal Definition
Contracts, fraud. An agreement made with an heir expectant, for the purchase of his expectancy, at an inadequate price.

2. In such case, the heir is, in general, entitled to relief in equity, and way have the contract rescinded upon terms of redemption. 1 Vern. 167; 2 Cox, 80; 2 Cli. Ca. 136; 2 Vern., 121; 2 Freem. 111; 2 Vent. 329; 2 Rep. in Ch. 396; 1 P.Wms. 312; 3 PWms. 290, 293, n.; 1Cro. C. C. 7; 2 Atk. 133; 2 Swanst. 147, and the cases cited in the note; 1 Fonb.140 1 Supp. to Ves. Jr. 66 Id. 361 1 Vern. 320, n. It has been said that all persons dealing for a reversionary interest are subject to this rule, but it may be doubted whether the course of decisions authorizes so extensive a conclusion and whether, in order to constitute a title to relief, the reversioner must not combine the character of heir. 2 Swanst. 148, n. Vide 1 Ch. Pr. 112, 113, n., 458, 826, 838, 839. A mere hard bargain is not sufficient ground for relief.

3. The French law is in unison with these principles. An agreement, which has for its object the succession of aman yet alive, is generally void.Merl. Rep. mots Succession Future. Vide also Dig. 14,6, and Lesion.
-- Bouviers Law Dictionary
Legal Definition
An heir’s bargain for the sale of his prospective inheritance at less than its value. See 47 Mich. 94, 41 Am. Rep. 711, 10 N. W. 123.
-- Ballentine's Law Dictionary
Legal Definition
See Bargain.
-- Black's Law Dictionary