Tchibo spotting scope

Can anyone please comment if this is good value:
http://tinyurl.com/rubd3

I had a look at one in the shop yesterday, seems quite well constructed,
rubber armoured outer and the front lens is coated.

As I live in London there isn't much scope for astronomy, so it will
mostly be used for looking at boats on the river.
However I've often thought of doing a little astronomy - would this be a
good way to start?