That sounds like the Concierge option that was available, different than through RCI.
I've seen it over $4K for 2 people. It should say on the RCI
DVC website whether the AI is mandatory and what the cost is.
What resort are you looking at? The 3 of the mandatory AI's are roughly $2000 for 2 people while the one with 3 BR only is roughly $700 PER DAY for up to 6 people but you must pay for 6 even if you have less. The Paradisus options are likely the best of that lot from what I can see, I have a coworker headed there in a month for a destination wedding. I think the reserve is better rooms but further from the ocean IIRC. They have a designation with AI options and one with AI mandatory. I doubt there's any different in price/options but don't know for sure. There really are only 5 resorts even though you see 7 listings. Personally I'd find an RCI or II member you know and get them to book for you rather than using DVC points. You should be able to get good options on short notice and even with a guest cert fee, for less than $300 for a 1 BR per week.