Wolff Stiffer recoil Springs?

[arcticcathonda]

Looking to replace the recoil spring in my Benelli SBE2, and I want to put the stiffer 25% spring in it made by Wolff. Does anyone know where to get these in Canada or another source? Brownells wont tell me how much shipping would be so I am a little iffy from ordering there.

Thanks in advance