Thanks again!! Duly noted... must forage...
And I surely hope there's not a parrot owner out there who ISN'T anti-mass production of birds, but I do know there are some who certainly are anti-breeder. Good to hear they have cookies, though...
Speaking of adoption, I went out to visit a boy who was listed on a few websites and I broke down and went to see him.

He was, obviously, adorable, but this was our encounter:
He and his lady were out on the front porch when I pulled up. I get out of the car and walk up to the porch, within his sight. As soon as I'm about 10 feet away : ear-piercing screech.
"Oh, don't worry - he's just warning us you're here."
Stepped right up to me, let me carry him around their house, I pet his belly a little with my thumb, but didn't offer to do any more because I didn't want to freak him out. They walked me to the room his cage was in (along with about 7 or 8 various bird, mostly conures and cockatiels) and he screeched again.
"He just thinks you're trying to put him away."
Showed me his food, which was a processed, colored pellet and said they feed him mostly that, but give him some fruits and veggies, along with animal crackers, chex mix, cheetos, etc. Walked him over to his perch and he offered a few more screeches. No explanations by that time. We went back out to the driveway and I sat down with him and just talked to him and tried to see if he would warm up anymore. THEN both owners lit up a cigarette

. I will say the house didn't smell like smoke and they stayed in the driveway, not coming especially close to him, but STILL.
He didn't say anything while I was there, but they said he said he mostly talks just in his cage when it's quiet. He let me give him a kiss before I left and by the time I got home I had an email from them saying that they really felt I would be a good fit for him and that they would come down on the price for me if I decided I wanted him.
So obviously, my red flags were his yelling (possibly from being caged in a noisy room?), his diet, and the fact that he lives with smokers. He's only 4, but the possibility of health issues really scares me. Do you think that rehoming to a quiet house without other birds and handling him would make him forget about screaming? What are the possible health problems he could have and, even if I had him vet-checked, do you think a vet would be able to pick up on them? And... since I'm new at this... is there another board I should be putting these questions on?? Thanks everybody. I've spent hours on this forum since finding it, this is such a great resource!