According to the original text of Acts 1:18, Judas purchased the field (not acquired/obtained). According to Matthew 27, the chief priests bought it.
Acts 1:18 Now this man purchased a field with the reward for his wickedness, and falling headlong, his body burst open, and all his intestines gushed out.
Mathew 27: 5 And he cast down the pieces of silver in the temple, and departed, and went and hanged himself. 6 And the chief priests took the silver pieces, and said, It is not lawful for to put them into the treasury, because it is the price of blood. 7 And they took counsel, and bought with them the potter's field, to bury strangers in. 8 Wherefore that field was called, The field of blood, unto this day.
Doesn't seem as two different stories?