408
In terms of the impact these attacks are having , the survey revealed the average ransom demanded was between £ 500 and £ 2000 .
 £ 500: price; £ 2000: price
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 £ 500: price; £ 2000: price