from bs4 import BeautifulSoup

import urllib2 #http://love-python.blogspot.nl/2008/02/get-html-source-of-url.html

url = 'http://services.runescape.com/m=itemdb_rs/top100.ws'

usock = urllib2.urlopen(url)
data = usock.read()
usock.close()

soup = BeautifulSoup(data)

tr = soup.find_all("tr")
obj = {}
for thistr in tr:
    BStr = BeautifulSoup(thistr)
    if 'data-item-id' in BStr:
        td = BStr.find_all('td')
        obj[BStr['data-item-id']] = td[5].string

#obj now contains all data in the format {"2":"107.6m",...}