My understanding is that strike price can be virtually unboundedly below current valuation of the share, given particular circumstances of a company, which makes this calculation quite sensitive to the valuation.
A call option on a share of Google with a strike price of $50 is worth a heck of a lot more than a call option on "name any startup" with a strike price of a tenth of a penny.
There are, naturally, cash flow implications to this.
- $110k + 5k options, with 5M shares outstanding, at a strike price of $1 / share.
- $100k + 3k options, with 1M shares outstanding, at a strike price of $0.01 / share
Both are realistic scenarios for an early-stage startup. The 3k options in the second deal are worth much more than the 5k options in the first deal, on paper. (This is without even brining in valuation in question.)