PSP : 9500 with 128 mb mem
2 Gb card : 2000
aluminium casing : 700
usb cable : 300
each umd : 1850-2000
extra battery : 2000-2500 ( as the PSP batteries last for around 3 hrs on full charge if u play continuosly i think)
So even I am interested in buying a second hand PSP.... as buying a new would cost almost 20 grand