The main plus on this deal is the inclusion of office. However I'd still go via quidco / TCB and get that plus whatever vouchers or cashback the same vendors are offering and get a better PC from eBay.
\"THe pc includes a 15in screen and an 80Gb hard drive" ... jebus..! I reckon a good quality USB stick may be a better bet. Or why not one of the intel compute sticks, at least its modern. these sound like they are 7-10 years old. I bet the companys involved get tax vcredits and probably carbon credits for "recycling" computer tat.
take note you can get a cheaper better laptop online then this firm are offering without being elegible through state benefits,laptops are rubbish for the price beware look around first