Great Pyrenees

https://en.wikipedia.org/wiki/Great_Pyrenees

Spreadsheet - availability and prices:

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Economics of Breeding

Article in Forbes

• http://www.forbes.com/sites/allenstjohn/2012/02/17/how-much-is-that-doggie-in-the-window-the-surprising-economics-of-purchasing-a-purebred-puppy/
• Notes: cost of buying a dog is small compared to overall cost of owning one ($250 food cost per year)
• Food cost - one Great Pyrenee will eat about 50 lb of dogfood per month
• One 50 lb bag of dogfood is $20 - [1]