Így mondanám.

Az angol jogban nem létezik ez a fogalom, mivel a szerződés két oldalának nem kell arányban lennie, tehát csak körülírás:

"For instance, if A offers B $200 to buy B's mansion, luxury sports car, and private jet, there is still consideration on both sides. A's consideration is $200, and B's consideration is the mansion, car, and jet. Courts in the United States generally leave parties to their own contracts, and do not intervene. The old English rule of consideration questioned whether a party gave the value of a peppercorn to the other party. As a result, contracts in the United States have sometimes have had one party pass nominal amounts of consideration, typically citing $1. Thus, licensing contracts that do not involve any money at all will often cite as consideration, "for the sum of $1 and other good and valuable consideration"."
http://en.wikipedia.org/wiki/Consideration