Typically, this sort of holistic comparison has included things like benefits (particularly retirement plan contributions, but moreover health care premium costs) but lately, workers seem to be taking flexibility into the equation. Would you trade a portion of your compensation for a more flexible schedule?
Business Insider reports that the majority of workers (regardless of age, gender and professional status) are willing to trade 10% of their income for more schedule flexibility.
There are absolutely some real-dollar cost savings to a more flexible schedule, mostly in commuting costs and additional child care. But I'd caution that this is a very slippery slope. It shouldn't matter when and where the work gets done, so long as you're meeting (and exceeding!) expectations. Taking a discount for flexibly-produced work implies it's somehow less valuable, and that's just not the case.