Deer greens??? What type of deer geens are you talking about? Biologic has several mixes and they all have different seed blends.
Of course, the commercial wildlife mixes are going to be more expensve than if you go to your local seed store to buy seed. Many folks like to plant their own seed mixtures and some prefer the commercial ready blended and inoculated products. There are advantages to doing it either way.
How hard the deer hit your plot will depend on what is available on neighboring properties. If your friend live close to you and has had very good results with his deer greens you might want to give it a try and let us know how it turned out and the type of seed that you planted.