BOSS on sale $15 for 40lb. What's the best prices you've seen?

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My local Orschlens is having a bird food sale and they have 40lb bags on sale for $15. I'm wondering what is the cheapest you've found for BOSS? If this is a great deal how long will BOSS stay good for? I'd like to buy it in bulk. Thanks guys!

 

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Anyone? Halp! ;p

 

[GC-Raptor]

Boss is high in oil content, which means it can get rancid. I would want to use it within a couple of months, if kept at room temperature. If you keep it colder then it would keep longer, but not in a refrigerator, very humid. I have never put a bag in the freezer, so I can't recommend it. I have bought 40# for $17.99 at TSC. GC

 

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Anyone else with feedback on BOSS price and shelf life?