There are two schools of thought in determining the price of Ethereum.
By way of intrinsic value: This typically involves on-chain metrics, project metrics and financial metrics of Ethereum, collectively known as fundamental analysis. The law of supply and demand, tokenomics, use case, project roadmap as well as regulations and governance involved would affect the value of Ethereum from a long term perspective.
By way of price action: Primarily analyzed via candlestick chart patterns and technical indicators such as MACD, RSI and the bollinger bands, technical analysis forecasts the price of Ethereum on the basis that history tends to repeat itself. As the candlestick charts are a general representation of the emotion of the market, news announcements and community sentiment can be significant price action drivers for Ethereum as well.
Investors tend to prefer the long term nature of fundamental analysis, whereas short term traders tend to rely on technical analysis more. In reality, both analyses may combine and create interesting scenarios for Ethereum and the cryptocurrency market as a whole.

Ethereum achieved the all-time high of $4878.26 in 2021-11-10, and is currently trading at $3392.89.

In 2015-10-20, Ethereum reached the all-time low of $0.4329.

The current market cap of Ethereum is $408.08 B, as 120.18 M ETH ETH is trading at the price of $3392.89.

There are currently 120.18 M ETH circulating in the market. These Ethereums can be actively traded or used in the open market.

In total, there will be 120.18 M ETH ETH. This includes the circulating supply, as well as those supply being locked or staked, and those yet to be mined, minted, created.

At the moment, the fully diluted market cap, also called the fully diluted value (FDV) of Ethereum is 100%. The FDV is calculated taking the assumption that all supply of Ethereum is circulation, multiplied by its current price of $3.39 K.

With an algorithm automated identifying historical data trends, this Ethereum price prediction estimates and adjusts the forecast from time to time based on current market conditions. With such advanced machine learning, this prediction can be used to help investors in gauging the probability of the crypto market before making any investment decisions.

Ethereum has a good potential ROI as the volatility itself opportunities for multitude profits. Such volatility is a double-edged sword, and as such would be suitable for investors with high risk tolerance and healthy financial position. Therefore, it is important to remember that Ethereum and the crypto market as a whole is always subject to extreme market conditions, legal policies, social media stories, and other unpredictable factors. As such, it is advisable to exercise risk management and do your own research (DYOR) before investing in Ethereum.

You can buy Ethereum via Gate.io by following the steps on how to buy ETH once you have funded your account.