professional a40 wireless headset

http://www.astrogaming.co.uk/products.asp?id=2783 does anyone have these and tell me howgood they are? and do i have to buy any thing like PS3 Chat Cable . 5.8 Li/Ion Battery , Premium Toslink Cable(optical cable) do go with them ??

I dont own those but to me thats WAYYYY more than you need to game on the PS3 unless you feel like you need to spend that much, can spend that much and are just a PRO gamer or some crap. i spend 64$ on Turtlebeach PX21 and they are awesome Amazon check them out you will see reviews on those headphones too