My understanding is that strike price can be virtually unboundedly below current valuation of the share, given particular circumstances of a company, which make

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.