Yesterday I had my monthly book club meeting (which I walked to rather than going two subway stops), and had mentally agreed to spend 7,000w on a set with two empanadas and coffee. I still got the set, but ended up giving the coffee to another book clubber (saving her 1,000w) and getting a couple pćo de queijo to try and share. After people gave me their share, I spent 6,000w (and that's with covering 500w for someone else to try the pćo de queijo), putting me at 1,000w less than I assumed.
Yes, I'm writing in detail about a savings of less than $1USD :-p