I was looking into refurb for my C32 narrowed it down to an outfit in Southend £280 for set shot blasted and powder coated cant find the card at moment!!
Most MB Dealers use them, they collect. So you cold even leave your car at the dealer who will put it on axle stands whilst the wheels are away with Lepsons.
I know Lepsons did have special offer about refurbing all four wheels including loan cars as well as free storage. Don't know if that is still the case but may be worth checking out.
Update- they are still offering free storage or courier service !