Blackberry 8520 with a power saving case worth 50 pound on its own ?

brand new condition powercase comes boxed but not blackberry i will include charger and if u want for a addition of 10 pounds a 2gb memory card for it i wouldnt mind a swap for any good android phone GENERAL 2G Network GSM 850 / 900 / 1800 / 1900 Anounced 2009, July Status Available. Released 2009, August BODY Dimensions 109 x 60 x 13.9 mm Weight 106 g Keyboard QWERTY DISPLAY Type TFT, 65K colors Size 320 x 240 pixels, 2.46 inches (~163 ppi pixel density) - Touch-sensitive optical trackpad SOUND Alert types Vibration; Polyphonic(32), MP3 ringtones Loudspeaker Yes 3.5mm jack Yes - Dedicated music keys MEMORY Card slot microSD, up to 32GB Internal 256 MB DATA GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps EDGE Class 10, 236.8 kbps WLAN Wi-Fi 802.11b/g I HAVE A IPHONE 4S FOR SALE BRILLIANT CONDITION COMES WITH EVERYTHING WHAT YOU GET WHEN BOUGHT FROM THE SHOP ALSO COMES WITH A WHITE CASE,STYLUS,CAR CHARGER. THE PHONE IS ON VODAFONE WILL SELL FOR 350 OR WILL SWAP FOR A IPHONE 4 AND AROUND 200-180 CASH MY WAY. I WILL NOT POST ANYWHERE. TEXT OR RING ME ON---- 07768 109374 I HAVE FOR SALE A WHITE IPHONE 4s 16gb ON THE TMOBILE NETWORK IT WAS WORKIN UNTILL TODAY NOW IT SAYS NO SERVICE I DONT KNOW WHATS RONG WITH IT I JUST WANT TO SELL IT GET SOME MONEY BACK AND BUY ANOTHER PHONE IF YOU NEED ANY