RE: cost
I bought my first bow used foe 75 bucks. It had sights, a rest, peep, and like 7 old arrows. I picked up a cheap release, some fieldpoints and bheads, and a quiver for like 50 bucks. I shot the hell out of a bale of hay a harvested a doe with ease, i could have killed a six pt but i passed to let him grow. I now have about 700 bucks wrapped up in my new bow. My new bow is so much better in ever aspect that i can't even begin to compare them. Nevertheless, i haven't killed a deer with it yet, a coyote and a squirrel, but not a deer. $125 bow = dead deer. $700 bow = no dead deer. IMO Bow hunting is a lot funner than muzzleloader hunting(ive participated in both) and if you shop around you can bow hunt cheap, for what its worth........
Whatever your decision, good luck.