@Tony
The advert for marshalls is quite clear, i ordered mine from Hook, unless there has been a change in the offer, Its £500 off the ap, i think the the discount for motobility on extras is up to the sales person or dealer at the time, i got 20%. Its been said many, many times, you will not get the best deal over the phone, you have to go in and place your order. Sales, never put all their cards on the table. As said before, you can use an advertised offer, as leverage at any dealer, it depends on how and when you bring it up. i used the marshalls discount at vines, 3 years ago.