Seems a really good deal to me, especially as only 18 month contract, 300 mins, 300 texts, unlimited internet (not sure what limit is). £24.54 per month and free phone. 7 months free line rental by redemption. £40.40 top cash back.
The link to the deal: http://www.mobiles.co.uk/t-mobile-samsung-i9100-galaxy-s.html
Scroll down and you'll see the deal Web 300 (18 months)
The costs are:
£459.72 - £178.78 (free line rental) - £50 (quidco) = £230.94
Here's how you get your casback at mobiles.co.uk:http://www.mobiles.co.uk/18-24-month-contract-five-stage-cashback.html
Keep in mind that you can do it through e-mail as well.
Samsung Galaxy S2 specs:http://www.gsmarena.com/samsung_i9100_galaxy_s_ii-3621.php
I was just about to order this myself and saw this...
Slightly confused... on the mobiles.co.uk site it says
Half-price line rental
Please note that any half-price line rental shown only applies if the '1/2 price' free gift is chosen (i.e. not with the free iPod or Xbox etc. unless otherwise stated) and is the equivalent of, after cashback redemption.
So that £25 a month is actually after the 7months free line rental (probably why it shows the 54p)
So its actually 25.54* 18 = £459.72 - £50 quidco = £409.72
Which still isnt bad but its not £230!
Apologies if i have this wrong but im pretty sure...
£25 / 1.175 = £21.277r ex 17.5% VAT
Ans * 1.20 = £25.53r = price of £25 tariff at 20% VAT
They just rounded up.