It's not just a price thing. Innova costs more to buy because it uses better ingredients so it costs more to make.
It's hard to say since they don't list the exact percent of everything, but if you look at the innova list it has more meat and also better grain sources. Also, I actually understand all of the ingredients in innova (
see them here), where eagle pack has a lot of chemicals I don't understand, like "DL-Methionine" which I just looked up and is apparently added to pet food to make a "meat-like" aroma (it doesn't already smell like meat?).
That being said, if you can't afford the innova (it's about $10 more for a 30lb bag), eagle pack is still a pretty good food. But if you decide to go with eagle pack, I would suggest the holistic select, which has much better grain sources. Eagle pack uses rice (ok) and corn (bad). The holistic select uses rice (ok) and oatmeal (good). Also the holistic select has actual fruits and veggies for natural vitamin sources.