The pricing of Barcelona Cathedral's public park is of high precision… For the last digit to represent a useful value (say 10 cents) a car driver should park her car for (approximately) 100,000 minutes, i.e. 69 days… but then the daily price would have applied, wouldn't it? A mere 5 cents/minute should be more convenient and as protective of car owners' finances.
When looking to the average business case of WAN Governance, we find similar situations where using round numbers and order of magnitude are easier to use and finally more significant.
Don't you think that "For $3/employee/month you save $30/employee/month and guarantee the performance of an application portfolio that cost enterprise $300/employee/month" is an easier and more useful guideline than "For $2.72 to $4.25/employee/month you save $24.1 to 32.8/employee/month and guarantee the performance of an application portfolio that cost $142 to $433/employee/month"?
Naturally, when evaluating the WAN Governance business case to particular enterprises, we use their actual data, organization and priorities to make "sur mesure" studies and evaluations. But even then, don't expect us to provide figures with 7 significant digits…
In a similar vein, you might remember the hilarious Seth Godin's talk at Ted?