I bought a peach tree a couple of months back from Homebase, which was basically dead unbeknown to me
I persevered with it, stared at it every day, but still it didn't grow. I'm gonna dig up the stick now, and plant a fig tree. Got one of those for the garden, and one for the greenhouse, so both options covered.
There was another thread on here a month or so ago from someone else who had bought a peach tree from Homebase, which wasn't particularly showing (many / any) signs of life, so perhaps shop around.
Good luck with whichever one you get for your parents.