Samsung mobile phone with £430.00 credit on sim card +

Samsung slide mobile phone with £430.00 worth of phone credit on it...... 4 pence & text ......8 pence a minute talk time...... obviously you can put the sim card in any unlocked phone if you choose !! only reason Im selling is i now have a contract phone, £430.00 calling credit will last you a long time.... Thanks. p.s, The reason the credit is high my son is away at uni and we kept it topped for him up but have now bought him a contract phone !!