One thing about covers is they have to fit the genre. When you write a particular type of book, you need to look at books in that genre. If you are not a writer with a lot of money or big publishing house behind you, you do the creating on a budget, but you recognize that what you see on the shelves is what you are competing against for reader attention.
I think the writer with less money can learn from this kind of shoot-- even if their son who is equally handsome won't pose for them... no sour grapes at all... none... well maybe a little ;).