Please dont take my word for it...but...
...I believe your looking about ?30 per wheel to have them refurbished,but they do come back looking brand new(Im sure many people may disagree!)so basically its the choice between...?120...or a new set...
It also depends on how your tyres are,If there fine then your prob better off having your current wheels refurbed,but You may be able to get a deal on new wheels with tyres..........The choice is yours!!!