All profits from the sale go back to the community, with hundreds of thousands of dollars donated to charities over the years from the Hastings Host Lion Club's main fundraising effort.
This year, proceeds will go towards Ronald McDonald House in Wellington - used by hundreds of Hawke's Bay families each year.
Last year about $30,000 was taken on Saturday and about $10,000 on Sunday.
Most books cost about $2 and many people bought dozens - the average take from each person is $20.
The book sale has grown steadily over the years, forcing the organisers to break out a separate sale for music, held at the same venue last weekend.