Bamboos are often cheaper than that depends on the nursery and the area and
if spreading is not a problem then they do indeed provide a good screen but
they tend to take about 5 yrs to get going

Not sure the one I have but planted a couple of years ago, supposedly
grows to 4m high. First year was some growth but not much and I thought
I would have problems but so far this year loads of new growth which
might take it to 1.5m which is still fairly slow from what I get as the
desired use in this case.

kev