Is it permissible to give the value of a vowed sacrifice in another country due to the absence of the poor in the place where the vow was made and the high price of the sacrifice there?

A vow is not established by mere intention; rather, it requires a verbal utterance that signifies commitment. If you vowed to sacrifice an animal for the poor using words that signify commitment, then you are obligated to fulfill it exactly as you vowed it. It is not permissible to give it to others, nor is it valid to substitute it by distributing its monetary value. As long as the condition upon which you made the vow has been met, you must sacrifice an animal for the poor, regardless of its price or the place of slaughter, as long as you did not specify a particular location for it. You may also delegate someone else to purchase and slaughter it on your behalf.