The current market price is around $8.4k but the hash rate is 90zhs.
90zhs / $0.01 = $9k so I think it's about 7% under-valued.
Fixing the ratio at $100 per EH/s is completely arbitrary. You have no basis for that ratio.
Furthermore, the hash rate has risen much more quickly than the price because of technological advances, so the proper price varies wildly depending on when you fix it.
If you fixed the ratio a year ago when the hash rate was about 50 EH/s and the price was $7.5k, you would say that the current price should be
$15k.
If you fixed the ratio two years year ago when the hash rate was about 10 EH/s and the price was about $8k, you would say that the current price should be
$80k.
If you fixed the ratio 5 years year ago when the hash rate was about 0.3 EH/s and the price was about $400, you would say that the current price should be
$120k.