'20,000 dólares por un cadaver' tells the story of the farmer Bruce (Miguel de la Riva) and his wife Helen (Dyanik Zurakowska). Please note: I have watched the Italian dubbed version, the names of the characters apparently vary in the Spanish original and the English dubbing. Anyhow, 'Bruce' shoots a man one rainy night, believing he's defending himself against a burglar. But the dead man turns out to be Burkett, the most wanted bandit around, and there was a price of 20,000 dollars on his head. Bruce thinks he is rich now, but immediately bandits take the bounty money from him. Helen is really worried when she realizes her husband wants to go after the dangerous bandits and get his money back, as he isn't really fast on the draw.
For a cheap B movie, this has a fairly good script. The hero, at first an innocent young man, develops a dark side, when he cannot suppress his greed and thus disappoints his wife. After this promising start, however, it becomes a run-of-the-mill western in the second half. Therefore I voted only 4/10.