I've noticed a company on eBay offering refurb of NC35 shock for £110, would this be worth doing or be better spending more and buy a new nitron, hagon etc shock?

What work are thy doing to it? if its just a refurb as in paint and new gas then you'd be better of getting something like you mentioned

Bin it there crap, your better off with a late NC30 shock

Cheers, will see about a replacement rather than spending upwards of a ton on the OE one

If you use a certain company on Ebay just make sure you ask for a full quote before they start, lets just say that almost always your shock "needs" something extra... They quoted me when the work had been done ....