Rohn makes a 44-foot telescopic mast that I have used for my 20m Moxon (with light-duty rotator). I removed the top-most section as it is pretty small-diameter stuff, but the mast is usable in the 35-foot range if properly guyed. The cost for the Rohn mast was around $80 USD. I don't know if you can get one there, but they're fairly decent in my opinion. In the US, Channelmaster makes a similar mast, but it is smaller in diameter than the Rohn mast.
Hope this helps...
73
Dave / K8JDC