Ok I'll straighten this whole thing out.
It depends on what you think the gift is, and you won't find out from Christians.
If you compare the gift to anything tangible/physical like a million dollars, it gets impossibly complex and will generate arguments that all fail because of inconsistency.
The gift is more psychological than that and has to do with the reality of existence.
Using a better example, take the idea 2 + 2 = 4. When kids start school they usually don't know that. But in theory, it's an absolute pre-existing reality. The teacher gives the knowledge as a gift, so-to-speak. But, the teacher did not give the students anything that did not already belong to them, so-to-speak. Still, the students have to accept it, or else thier lives might end up some kind of living hell. If they don't accept it, they may never be able to get a job, never be able to trade the market...they'd never have a "life".
What was given Jesus, and what he gave in turn, is/was much more valuable than 2 + 2 = 4. And if anyone can manage to accept it, by first believing in it, s/he would have much more of a life than the living hell we lurk without the knowledge given. Again, the knowledge given us is about pre-existing conditions...which already belong to us...having already been given properly, and long ago.
The "cost" of a gift of knowledge, such as 2 + 2 = 4 is the belief that 2 + 2 = 3 or anything else that is false. Likewise, the cost of what Jesus received and gave was "high" if you consider everything you believe about "the world" is false. One has to give up all the false beliefs in order to accept the knowledge of pre-existing conditions.
The pre-existing conditions are so astonishing, anyone hell bent on self sabotage destruction will find it hard to believe.
That's it in a nutshell.