Dont Know about sky didge codes BUT there is a asian tv repair man near me who pays £150 to all the local scags for didgy boxes.I was repairing his front door(some1 broke in)prob the scags 2 resell boxes
bach 2 him, and i asked what u doin with them,He smiled and then said he chipped reprogrammed and shipped abroad for £500 .And he had a shit load of boxes at least 70.When i quizzed him more he realised he had already said 2 much and he clammed up,but did say they were not for sale in UK.HOPEING 2 HAVE A MOTORISED DIDGY sat up soon and then i Will BE PAYIN HIM A VISIT.