[gooeykabuki]

In any negotiation, your best bet is having leverage. In this scenario that would be other offers at the rate you would like or other benefits/flexibility.

In terms of framing, instead of saying you're in S. Asia and $30/hr is a big deal, you could figure out a rough $ value of your work to the company. In this case it's clearly more than $30, but is it $100 or $300 or $500? Having that clarity in your mind and articulating it to potential clients is going to be super helpful in the future, and change how you see yourself and sell yourself to clients.

Finally, you may want to invest in building your negotiating experience. I would start with the Appendix: Negotiating one sheet and ideally read and practice what's mentioned in Never Split the Difference: https://www.amazon.com/dp/B08W57YLHR/.

Good luck!