Guided Deer Hunt

I am thinking of giving a guided deer hunt to my dad and my son for Christmas. I have no idea how much something like this would cost. My Dad has heart problems (though you wouldn't know it to look at him) and we don't know how many more years he'll be able to hunt with my son. He is the one who has guided him to a love of hunting, fishing, and the outdoors. Would love to give them this experience together, but don't know if I could afford it. Any suggestions would be welcome.