Amazon Prime's trifecta of two-day shipping, instant media streaming and monthly Kindle book rentals just became a little more consumer friendly at a slightly higher price. As a Hacking Netflix reader recently noticed, Amazon is now inviting users to buy into Prime for $7.99 a month, bringing the service in line with Hulu and Netflix's monthly pricing schemes. The price of skipping the yearly fee is its own cost, however -- subscribers who stick with Prime for a full year will pay $16.88 over the annual plan. Paying for all 12-months ahead of time is still an option, of course, scoring long-term buyers a 20 percent discount at checkout. Good deal? Sure. Even better if you're trying to save on shipping this holiday season.