here is an interesting overview by twitter user @sassal0x, published on Nexo dispatch, regarding numbers in Ethereum network in 2017 and 2020, while in both cases ETH price was $500, snapshots are taken on November 29, 2017 and December 16, 2020

one can see from the list that:
- number of active addresses and transactions almost doubled in between
- total number of addresses is 10x up, 24-hour fees changed more than 10x
- development progress soared with over 2000 active developers and over 4 million downloads from Truffle
- DeFi assets changed perspective from millions to billions, stable-coins on ETH changed from non-existence to billions
and ETH2 is introduced with more than 1 billion USD locked-in
after all, price is the same, something is wrong, $500 was too much in 2017, or it is too little in 2020, it is up to anyone to judge for himself, do not take this as financial advice
Obviously the price is too low for eth considering the overall growth in its overall ecosystem, business and adoption in last few years, at the same time i do often read big claims of growth coming from enthusiasts, in last few days i have seen 10k as eth target multiple times in some eth facebook groups and pages but i think 4 to 5k will also be a big milestone and realistic target for eth.