8' Brillion seeder cultipacker for $1,500, seems like a pretty good price from what I have seen online in the past. Looks like it is just missing the transport wheels, but I don't know much about these things.
Nice looking disc and that's a steal if bearings are good. I prefer hydraulic on wheels especially for large plots. More weight, width and easy to hook up and get to work. I would think 45hp would be ideal.
Those wheel disks make good equipment IF you have the space to turn around with them. Wow....$200?
I'd never get one turned on my land due to the trees. Most of those disks followed a moldboard plow, rather than primary tillage or for breaking new ground.....not sure how effective they would be for tillage. Set aggressively......a 12" disk like that would pull pretty hard IMO.