Some coin value guides that feature 2014 coins include the About.com U.S. Coins Value Guide and The Official Red Book, as of 2015. About.com distinguishes coin value from coin price, saying most value guides actually give current coin retail prices, not the value dealers would pay for a given coin.
About.com also describes Whitman Publishing's "Red Book," officially titled "A Guide Book of United States Coins 2016" in the version published in 2015, and strongly recommends it as a general reference for coin information. Whitman's The Official Red Book website also offers price information for 2014 coins.
The NGC US Coin Price Guide is another website that features typical retail prices for 2014 coins.