Here's an approach to valuing the start-ups.
Imagine the company you're planning to join is worth $30M (240 CR.) post-money. They've raised VC funding at seed or Series A, so the investors own 20% and the founders + ESOP pool is 80%.
Take an exit event scenario in 3-5 years. The company could be worth $150M (5x) or $300M (10x). This would typically need at least one more round of funding, possibly two. So, the company again gives up 20-30% of the company. So, the founders + ESOP pool is 60% and the investors are 40%.
If you got 50L as your ESOPs while joining,
-- They're worth 50L x 5 minus dilution of 20-30%. So, 1.75 - 2 CR. That's a 4x return in 3-5 years, which is difficult to replicate in any public market instrument.
The value only goes up if the valuation goes up.
If this is life changing money for you, it makes a lot of sense to go for ESOPs.
However, it comes with heavy risk. ~80% of VC investments don't return their capital to investors and these investments are picked from 100s of company pitches.
That's the trade-off. Do you believe this company will be in the 20% that return their capital and ideally the 5% that multiply wealth?