Talk to one of the specialty boutique plant stores and see if they’ll work with you to find a buyer, and negotiate commission. Something like B. Willow maybe in Remington. I’m not suggesting them specifically, it’s just the only one that comes to mind that I know by name.

IMO, I don’t think you’re gonna get anything near the price that you are hoping for. I’m pretty sure half of the price of a plant like that involves shipping. I could be wrong, and hopefully so.