If Boss, H&H, or Purdey, why not Woodward?

Derek - there are plenty of reasons why a relatively new/servicable gun may have new, replacement barrels. But the market is not very sophisticated at "cyphering out" that "why." The market solves the delima by discounting the price. The buyer may well be getting newer and better barrels, but there always remains that nagging, suspicious question of "Why?" Even if you are satisfied that you know "why" and it is OK, any potential future buyer may not be so sure and will likely discount your price. Anything non-OE must be approached with eyes wide open.