Ethereum's divisibility allows for very precise transactions with small fractions of the currency. At Nexo, we've made it even more accessible by enabling users to purchase as little as $1 worth of ETH.
There are several factors that influence users' decisions about how much Ethereum to purchase, including supply, demand, availability, competition from other cryptocurrencies, and investor sentiment. Given the volatility of the market, the timing of ETH purchases is a matter of personal judgment based on each user's knowledge and confidence in the technology.