An Australian publisher has had to pulp and reprint a cook-book after one recipe listed "salt and freshly ground black people" instead of black pepper.The article states that the publisher, Penguin Group Australia, had to reprint 7,000 copies of the book Pasta Bible because of the error, costing them 18000 USD.
This is a good example of why you should spend a little money on hiring a competent and experienced proofreader. Spell check software such as MS Word's spelling and grammar check will not be able to spot an error like this, because "people" is correctly spelled! For copyediting and proofreading, nothing will beat a skilled editor.
The misprint may be funny, but the amount spent on correcting the error after publication is no laughing matter. Spend a little on proofreading and copyediting, save a lot of money in the long run!