I have an oppertunity to purchase 100 gallons of WVO a month for 50 cents agallon, is that a good price?
If it's a good price for YOU....GO FOR IT ! Offer less and if they really want to get rid of it you are golden. Why do you need to "purchase" it? Don't they normally have to "pay" to get it hauled away?
I was assuming this was a case where someone collecting oil for their use had exess they were going to sell you the exess. If you have to go collecting yourself I don't think that is a good deal at all.
In the area I am the renderer doesn't charge for their service, and they pump out the grease traps as well for no charge. And the renderer has scared them a bit telling them that they need to only let liscenced haulers take the oil becasue they are liable for any spills..etc.. Compared to where I recently moved from where they were "how can I help" kind of people.