Harman Kardon Onyx Studio 8

It's the newest model made in January 2023. Still in the box used once for literally 2 minutes total. Was connected just to make sure it worked, haven't used it since. Brand new. Has papers. Online on eBay I've seen it sell for $499, and the lowest I've seen it go online is for $200 but it was used. I'm asking 225 but I'm willing to negotiate.