just bought a .22 Webley Mk 1 pistol off this site and I am now looking for a .177 barrel for it

Knibbs/Chambers prices have gone up about 40% on Webley barrels over the last 2 years. Now £30 to £32
Does anyone know a source of cheaper Webley pistol barrels or does anyone have a Webley Mk 1 pistol barrel (still straight) for sale