Depends on what kind of risks you want to take.
I just spent a LOT of time looking for a 4.8is. Checked Cars.com, Autotrader, Ebay, etc. AND the auctions.
Private prices are mid 20's - mid 30's and up. From what I have seen, mid 20's gets a high mileage or not nearly perfect example.
The 05' NO WARRANTY example that I bought was about the cheapest one in the USA with less than 40K miles at $29K. And it had PROBLEMS. Lucky to get out of that one.
The Auctions (Manheim) are selling them for $33 - $36K - 05 - 06 examples again with low miles.
You can probably find an 04' with 65K+ miles in that range...But I would be nervous. Add a $4K warranty (IF they will warranty a high mileage car) and you are near $30K.
These cars have issues from time to time...And are expensive to repair.
This is MY .02 since I have just put a lot of time and aggravation into this search.
Just did a search...Not much there...Bunch of junk.
Used Cars for Sale: Listings Near 32736 - Cars.com=
I am sure if you wait however, you could get the right car from the right seller.