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 Announced 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 Bluetooth Yes, v2.0 with A2DP USB Yes, microUSB CAMERA Primary 2 MP, 1600x1200 pixels Video Yes, QVGA Secondary No FEATURES OS BlackBerry OS 5.0 CPU 512 MHz Messaging SMS (threaded view), MMS, Email, IM Browser HTML Radio No GPS No Java Yes Colors Black - MP3/eAAC+/WMA/WAV player - MP4/H.263/H.264/WMV player - Organizer - Voice memo/dial - Predictive text input BATTERY Standard battery, Li-Ion 1150 mAh Stand-by Up to 408 h Talk time Up to 4 h 30 min MISC SAR US 1.22 W/kg (head) 0.83 W/kg (body) SAR EU 1.02 W/kg (head) 0.78 W/kg (body) Price group TESTS Loudspeaker Voice 69dB / Noise 68dB / Ring 76dB Audio quality Noise -87.2dB / Crosstalk -86.6dB