All books are donated by locals and this year tens of thousands have been handed over.
"We don't have to run a donation drive or anything like that. When we put the ads in the paper that's fatal.
"I came in here last Friday and there were five cars waiting to drop off books, and I came in on Saturday and there were four boxes at the front door. You couldn't get in the room."
Burkett said a team of 45 volunteers help out across the three days of the sale. Burkett says that helping is so popular, all the volunteers approached her, rather than needing to advertise.
"I've never had to go and beg for people. People have just got that love and we've got a great rapport with the team here."
The sale, expected to raise around $3000, is important for the local St John branch.
"All the money that's raised stays in Whanganui.
"We don't have high prices, and we have a good standard of book too."
The book sale is open on Friday from 10am to 6pm and Sunday from 10am to 4pm at the St John Community centre at 25 Tawa St, Gonville.