To answer your question, yes! I would say with less reservation then most humans I know but I would not truly know until placed in a life threatening situation if I could follow through on my conviction.
It's really hard to give an honest answer to questions like this if you haven't actually been in the situation. We would like to think we would do what we want ourselves to do in those situations, but we simply don't know.
If you want a reliable answer, you have to put people's houses on fire and observe how they behave. But I don't think you'll find a grant for putting hundreds of babies/pets in mortal danger to see how their parents/owners cope.
From a purely economical point of view, you may claim that things have only the value you ascribe to them. But I believe in intrinsic, objective worth.
One man's teddy bear is another's broken toy. A person's life, however, is non-negotiable.