Prime Big Deal Days isn't till October 8 and 9 — but many deals are already here. Check out the best book deals at Amazon already live before the sale even officially begins.

Ring Stick Up Cam Battery HD Security Camera: was $99.99 now $54.99 at Amazon Today's early Prime Day sale has the Ring Stick Up Cam on sale for $54.99 - the cheapest price we've ever seen. The Alexa-enabled security camera features motion-activated notifications and two-way talk and can be placed indoors or outdoors.

An Amazon Prime membership is $14.99 per month or $139 per year if you choose to pay annually (the monthly rate for that is about $11.50). But right now, Amazon is offering a special Prime deal: You can get three months of Prime for just $7.49.