apple i phone 4 16gb white ?

hi i have an i phone 4, white and 16gb, the phone is 1 year old and on the 3 network, i didnt have a case to protect it and so it has a few scratches, the rear glass has a small crack also, but you can`t feel it was due to me sitting with phone in my back pocket, appart from that the phone works perfect, set price of £100 due to the phones condition, im based in motherwell