Got mine from local (to work) pneumatics supplier... not that cheap, but very good stuff. In a nice shade of blue too!!!
Think I paid about £15 ish for quite a few metres (just over 10.5m).... more than enough (I think) to do my Landy. Though I still haven't got round to fitting it!!
You can have a look when you come round if you want, might even be tempted to sell the pipe - taking my 90" off the road to rebuild soon, so won't be needing the pipe for quite a while.
Ian