Make sure you're connected to the Interwebs, then run:

$ python script.py

And you should see my answer to the challenge :-)

HTTP handling is done via Requests, so make sure you have it installed.

• The Price class (implemented in price.py) is responsible for price parsing;
• A small suite of tests is provided in test_price.py;
• I'm only parsing the HTTP response text in one shot because I know there's only one price in it. In a real life situation, putting it through some XML/HTML parsing library beforehand would be required;
• You could parse the price using a regular expression, but I think it would be more error-prone in this (simple) case;

File output.txt contains the output on my machine (Ubuntu 12.10, Python 2.7.3).