Sure, $7500 is realistic for people who are enthusiastic for that. For sure. I think under $10k in general is doable for anyone who's into this without being wealthy, because a $10k loan is affordable if you had to go that route and really wanted something like this. No different than cameras, lenses, telescopes, drones, GPUs (sigh), etc, shoe collecting (lol, sigh) and that's nothing compared to boats, motorcycles and cars, etc.
I was mainly looking at their double tower in the $25k+ listed range (cheaper from a dealer with a sale, but that's not what is listed for someone who is shopping). Over $10k is one thing, but $20k+ and more? Well, there's no limit, but there's a soft limit somewhere in there for all of us. Can't put lines in the sand on that since there's no way to make that work in reality. But that's why there are budge brackets and for someone who's in a bracket above summit level, well, their limit is unspoken.
Very best,