They think that Bitcoin is the first in the game, and https://youtu.be/ with its revolutionary ideas, it will be the one to invest in. Some investors think that Bitcoin is superior in the crypto sphere, and investing in other cryptos than Bitcoin does not sound compelling. Crypto markets are in their early stage and evolving very fast. Some sellers are open to trading over the Internet, but you need to be quite cautious, as you'll be running a huge risk of losing your cash. The majority of these transactions now happen in public places and both parties must take all the precautions they would normally take when buying and carrying big amounts of cash. There is always a choice of utilizing payment services like PayPal that guarantee that the reception of products, but most sellers nowadays prefer non-reversible hard cash due to the constant fluctuation of Bitcoin's cost.