Red & Trashboy, I had reached out to IR but they had sent me the same doc where it says certian conditions and honestly I couldn't figure out much. Then I spoke to Schwab and ETrade regarding the cashless exercise. They read the docs and confirmed that one would not be able to do cashless exercise if the Warrant + Strike Price = Stock Price (currently it's the same case).

One can pay for the cashless exercising by selling some of the warrants at the time of exercise equivalent to the strike price, so you may lose some warrants/shares to do cashless exercise but it's still a good deal if the Stock price is above $8-10 at that time.

Schwab charges $39 per cashless/or cash exercise per transaction (any number of warrants/shares) however they will not charge a customer if they've done more than 36 Trades in the past 1 year. I believe it's similar with others including ETrade.