It doesn't look bad, though it has a lot of peas/beans in it. Probably a little low on meat, but that could be remedied by giving your dog some chicken, ground beef, etc. a few times a week. We are giving our newest family member - a kitten that found us - Evolve kitten food as well as some canned food. Once he is a year or so we'll switch him to the same grain free food as the other kitties.
I don't know how much Evolve grain free dog food is, so it's hard to say if it is worth it. I would say the formula is comparable to Tractor Supply's new line of grain free food, which runs about $37/30 pounds.
For comparisons sake, I have my two sheps on Dr Tim's food but not the grain free kind. It costs me $61 for 44 pounds at Chewy.com and is rated 4.5 stars. The dogs look great and have a very good amount of energy. The grain free is $54/30 lbs. and gets a 5 star through dog food advisor. All the varieties have a very good amount of meat in them.
So that was a long way to say you will just have to evaluate the cost vs. the quality and see what is best. One of my dogs was on Wellness also, but when the cost kept going up, I had to switch.