Bought this about a year ago for my daughter. She was going to do IT, now wants to do accountancy. It's never been switched on.
It is a model B version 1 with 256 memory. It is in a transparent case which I bought. There is a 16 GB SD card with Linux Debian OS on it (never put in the pi). I have an old mobile phone power supply which outputs 5v 650mA and micro usb cable.
So you would need (as far as I understand it)
a usb mouse
a display/monitor (HDMI or DVI)
a LAN cable (RJ45)
a usb keyboard
You might have these things just lying around anyway!
From memory, the Pi, box and OS card came to about 60 quid a year ago.
Just to get shot of it, £20-00 + postage
Sold to the Prof!