I like Lucas Cash, I've watched him train at shows and even asked him a few questions once. His horses seem to do well. It's worth a look see. I don't really know what paints are going for these days....
He's a super cute little horse. Looks great all spiffied up for the show too! Looks like they've got him going in a nice collected frame too from that first pic. Definitely worth checking out. Price seems reasonable to me too.
He's really steady in his movements, and appears to be able to carry the slow movement easily, without "hopping". It looks natural for him. Great for pleasure. I'm sure for the HUS, he'd do well stepping out in pace as well. He's well bred.
He's a nice in-between size for both rail, and pattern classes. I also think his price is beyond fair. These Paints and Quarters are so commonly going for 10k+ for started show horses.
I'd ask for some confo shots though, without tack on, so you can really see his body more.
I see a hunt seat horse....don't see a WP horse at all. I mean, this horse could squeak by doing WP, but his build and movement is geared to HUS. I've seen others videos with this horse being ridden HUS and that's where his talent lies.