That's my problem. I have a lot of stray cats around me, so I buy a lot of cat food.
Locally an 8kg bag is $32.
If I drive 60km round trip to walmart, that same bag is $25.
Amazon with free shipping, that bag is $22.
Not a huge difference but I don't have a lot of money and it adds up fast, especially since I buy 5-6 bags a month. ($10 savings on a bag X 5 is $50 a month, or $600 a year.)
Edit: A few of the rodents (I spilled treats on the floor and they were kind enough to help clean up the mess.)
That would deserve a holiday akin to the 4th.