L4D2 Price & psilentaim

a present sale price 

• 9.99 £ for 30 Day
  
  
• 19.99 £ for 90 Day
  
  
• 24.99 £ for 360 Day
  
  
• 44.99 £ for Lifetime
  

1. what is the original price of L4D2 before the easter sales period ?

2. perfect silent aim Does this also apply to spectators?