After reading numerous threads on ESOPs on Grapevine - I am convinced that most of the commenters don’t understand the use case of ESOPs at an early stage startup.
Employees are offered stock-based component because the startup can’t afford to offer competitive market salaries.
It’s an early stage bet - you’re taking the risk because you (most likely) like what the company is building + you’re hopefully getting a role that allows you to battle test and accelerate your skillsets.
If I were you, I’d ask what does the appraisal policy look like? How do they feel about appraisals in general considering you’re willing to take lower cash comp in the beginning but at some point you’ll need to prioritise cash.
Inquire about their ESOP policy to understand how thoroughly have they thought about it? What’s the exercise price? What’s the exercise period? (esp how lenient and employee friendly is it?). What does the vesting schedule look like?
There is a possibility, although small, that esops can lead to outsized returns (million dollar outcome). Try to understand the kind of investors that have already backed the company - usually you can tell a lot about the company’s overall pedigree from how they construct their cap table (the kind of investors they partner with).