I went to T-mobile to renew my contract. I was looking for free HTC Desire, £25/month, 18 months contract. Guy couldn't find nothing even near to this what I was looking for but he offered me Galaxy S instead. I ended with £20 for Galaxy S, 18 month contract, £20 a month, 100 mins / 100 txts / 3GB Web / flex booster..
(18x£20+£20)/18=£21.11 a month or £380 for phone worth over £400 it works for me.
No hassle with Quidco or redemption :)
BUT now is a big question: stay with it or exchange it for Desire???
ONLY AVAILABLE ON RETENTION DEAL.
i.e. You haev to already have a contract with T-Mobile .