Index Mundi http://www.indexmundi.com/commodities/?commodity=wheat

Agro Chart http://www.agrochart.com/en/quotes/markets/all/1

GAFTA http://www.gafta.com/

Bushel to Ton calculator http://www.agr.gc.ca/policy/income/cfip/btc.php

Dollars/Bushel : Dollars/Ton Converter http://www.agric.gov.ab.ca/app19/calc/crop/bushel2tonnevalue.jsp