Counting the Cost
Counting the cost is all about good planning. You work out how much you'll need to pay and whether you have the money on you before you get into the taxi. Otherwise, things could get awkward at the other end of the journey.
Here's how Jesus put it. He was telling people to count the cost before deciding to become his follower, because it was going to be personally costly...
"For which of you, intending to build a tower, does not sit down first and count the cost, whether he has enough to finish it – lest, after he has laid the foundation, and is not able to finish, all who see it begin to mock him, saying, "This man began to build and was not able to finish"?
Luke 14:28-30