UPDATE: NOVEMBER 16, 2013 - The price has dropped back down again, but not quite as low. The Kindle edition can now be had for 3.49.
UPDATE: OCTOBER 18, 2013 - The price on this has gone back to 9.99 as noticed by an anonymous commenter. I hope you picked up your copy when it was available at the lower price. It's still a great book, but for that price, I'd go for even a used hard copy rather than digital. That's just personal preference, I suppose.
One of the best homemade soda books of all time is Andrew Schloss's Homemade Soda: 200 Recipes for Making & Using Fruit Sodas & Fizzy Juices, Sparkling Waters, Root Beers & Cola Brews, Herbal & Healing Waters, Sparkling ... & Floats, & Other Carbonated Concoctions. Wow, I never really realized how long that subtitle is.
Anyway, I was browsing some other things on Amazon and came across the Kindle Edition of this for the super low price of $2.99, so I thought I'd share that with you here.
I don't own a Kindle, so I'm not sure how this looks on it, but you can't beat that price for the tasty recipes in this book. A lot of them are for soda by the glass, but there are some good ones that are designed for soda siphons or fermented batches. My personal favorite is the Honey Lemonade Soda, which I've mentioned before on the blog, but it's a really good substitute for a San Pellegrino Limonata.