Just ordered a new PAYG Orange San Francisco in white, I called orange and the sales guy quoted me £74.99 with a £10 Credit on the phone. Told him to go ahead with the order but the good chap added 4 sim cards to the order and this gave a further £7 discount. I still keep the £10 credit.
He was a bit surprised when the discount came through.
I believe you do need to have been an orange PAYG customer to get this deal.
Offered the phone in black also.
Hope this helps someone. Vote Hot if you like :)