Definitely worth it. Let's set aside the advantages it gives you on the hunting aspect for a minute. If anything, $800 is 100% worth it to save your hearing. You're either going to use earplugs and risk not hearing a coyote or you're going to blow your ears out by the time you're 50 years old without one.
On the hunting side, nobody will try to tell you that coyotes can't hear the shot go off. However, I think when they get shot at with an unsuppressed gun, they have no question that they just heard something dangerous. A suppressed shot seems to just confuse them. I once saw my cousin shoot at a coyote 500 yds. out that ran closer to us after he missed. Other times, I've seen pairs come in and even though the second coyote runs after the first coyote is dropped, he'll still stop long enough for a follow-up. The likelihood of that might decrease when you're unsuppressed.