Amazon's Kindle Paperwhite Signature Edition returns to a record low of $135

Amazon's Kindle Paperwhite Signature Edition is the best e-reader for the money bar none, and you can now pick one up at the lowest price we've seen. It's back on sale at its Prime Day price of $135, for a savings of $55 (29 percent). Amazon has also knocked 29 percent off the regular Kindle Paperwhite and Kindle Oasis devices, so if you're in the market for an e-reader, it's a great time to pick one up.