Hi we are not a selling site but some members do offer plants.
have you googled the name with 'for sale/to buy'?
or google rhs plant finder and then put its name into its search facility. it will then tell you who has it for sale.

I have a very young one from a last years summer cutting. If you really can't fine one anywhere let me know and I'll take you a cutting, but it won't be quick as I find it better to root cuttings before trusting them to the post.

Thank you. For a lot of cuttings I have always found that to put them in a glass bottle in water with no leaves in the water is good. After two or three weeks you should see roots appear. Wait until they are fairly long and strong then CAREFULLY pot them up. You will learn from experience. Thanks - Phil 28-04-2015

I often do that and indeed the one I have taken for you in case you need it is at present sitting in water. It seems to work better in spring though - when i tried this method on some autumn cuttings I found the roots were very tender and difficult to pot up without breaking.
(Wouldn't normally take them in autumn but I found some desirable varieties while away for the weekend and asked a gardener if I could have a few) They were fine for a while but I lost most of them in the end.

PM me if you decide you would like the cutting if it roots - hope it does as the plant isn't really old enough yet to take any more.

I certainly would like a cutting if possible. Thanks for trying anyway. - Phil