I don't spend 2k, but a US data point-

   1lb of rice: 0.89$
   1lb of rolled oats: 0.69$
   1lb Cherry tomatoes: $4
   (Quality) chicken breast: $8

In other words they sound similar. However, there's a shop downtown that sells all the same things for 30% more.

I suspect people with crazy food bills are:

   1) in exceptionally expensive locations like SF or Switzerland
   2) buy more packaged food
   3) eat out more than you
   4) maybe are taller than you

In regards to the last, I swear my (short) friends eat half what my (tall) family does.