Restaurant grease recycling questions

Im not sure how big grease recycling is in your part of the country but over here in the north eastern US the companies literally fight for the grease. There are many biodiesel companies that will buy as much as you have but some want to buy by the lb and others by the gallon. While it is a messy business there must be money to be made because some make you sign a real binding contract because there are other companies that just drive around and try to pay a nickle more and suck the grease out of a competitors tank. There is an index of what yellow grease goes for http://www.ams.usda.gov/mnreports/lswagenergy.pdf. Good luck