There are some sites such as Bitit which offer purchasing Bitcoins using vouchers, which is really cool. Coinmama is a credible option even though the site requires some level of verification. The site is an efficient and reliable escrow system with an excellent security set up. The site acts as an excellent escrow system by integrating traders to meet and trade along with online trading. However, sellers are in complete control of customizing the transaction fee, which is a matter of concern for all buyers. Hardware wallets come with a price, but they are much safer.