WTB Selenicereus Megalanthus Cutting

[Hobo62288]

I have searched Ebay and other easy access sites but they either want too much, I dont trust its truly S. Megalanthis, or something.  Anyone on here who is willing to sale me one decent size cutting (8 inch or bigger)?  I live in zone 7b and have to bring them indoors for half the year at least which is making my seedling Megalanthus grow poorly.  So a cutting is my best bet I believe.  Thanks for any help