Chris Graham thinks there is such thing as a free lunch (and that yours looks jolly nice from where he's sitting). So it's fitting that his first book is an inexpensive guide to finding free Kindle books.
Buy it and then perhaps he'll be able to buy his own lunch (and stop looking so enviously at yours). And in return you'll be able to enjoy a huge range of brilliant books absolutely free. Can't say fairer than that - can we?