In “A Worn Path” by Eudora Welty, the unexpected benefit, or boon that Phoenix received is "ten cents". She received 10 cents as a boon that she will to buy a paper mill for her grandson.
"A Worn Path" by Eudora Welty is a short story dealing with an elderly African-American woman called Phoenix Jackson who starts a familiar journey on a road in a rural area to get some medicine for her grandson.
The story is related in the third person point of view.
It is set in "Natchez, Mississippi" during the Great Depression era.