I might have just what you are looking for if you can hold out for about a Month or Two.
I have a Castle and a Keep, both in Felucca. However, the Keep is literally sitting just behind the Castle.
The thing is, I am leaving Ultima Online. I have been playing since the beginning and rarely sold a thing save for in times of needing quick gold. So, I have a ton of stuff. When I reactivate those two accounts, probably within a couple weeks, I will begin sorting through all my items and gear and most of it that is not already spoken for will be put up for sale in my Castle or Keep. Once I am done selling most of it, I will then pack up and was planning on selling the Castle and Keep as a combo, package-deal.
Mind you, this is still some time away as I do not have the RL Finances nor the Time to get all this done anytime soon. Plans were already made to hold off reactivating for at least 2-3 more weeks to begin the organization and merchanting of my collected items.
If you're a patient one and you're looking for the Castle & Keep package (in Felucca), let me know and we can discuss a price or something.
Never the less, welcome to Origin!