A decent flip-type phone with 8Gb memory built-in and 3.2 megapixel camera (see http://www.sonyericsson.com/cws/products/mobilephones/overview/w980
for more features). Provided you claim according to the T & C, the phone will work out at £100 over the period, i.e. £8.33 per month. Also at the moment Quidco pays £100 for a Vodafone contract phone from Phones4u, so potentially the deal can cost you "0". I suppose there will be costs for posting the 4 redemption certificates, so potential cost of c. £12.