$3,000 is a lot of money for a grade horse. He is built very downhill and is post legged in the back. In the video his gaits look very rough and they let him lope on the wrong lead. Didn't even try to fix it! That is a sign right there. He might be a big horse but he is very green. In my opinion he is not worth the 3k they are asking.
I don't think the rider in this video does him much justice. I'm not overly knowledgeable on detailed conformation aspects but from the pics and video, I do like his disposition and to me, he does look nice. I think he could be a sweet and patient ride but right now I wouldn't pay $3000 for the few things he seems to know. I have a registered barrel mare that is finished that I paid $1000 for (I got lucky there) and I have a grade that I probably overpaid a little for at $1500 but he "became" worth it after I started working with him. That's the range I would offer for this palomino. Of course area always matters a little there. Time to bargain. Good luck!
I like this grade, he does seem sweet and tolerant, but really green and MAYBE worth $1K. IMO he will pretty much need retraining, since these folks are doing him no favors at all, and I would bet he has lots of holes in his training. He also is being ridden 2 handed. I would watch this one from afar, let them sit with him for a while, and they may just take a whole lot less after a while.
I like the first horse but not for that price. I don't like the 2nd horse at all for weight carrying. Its a buyers market out there. Keep looking and I'm sure you will be able to find what you want at the perfect price.