As to how it supposedly went down:
After van der Sloot initially contacted Kelly and said he would reveal the location of Natalee Holloway's remains for $250,000, he later agreed to lead Kelly to the site of her remains for $25,000. Once identification of the remains was confirmed, Beth Holloway was to pay the remaining $225,000 to van der Sloot.
Van der Sloot received the $25,000 from Beth Holloway and led Kelly to a specific site in Aruba. He identified the site as the location where Natalee Holloway's remains were buried, although he knew that information was false.
Van der Sloot kept the $25,000, but later confirmed by e-mail that the information he had provided was "worthless."
The Indictment also seeks forfeiture of $25,100.00, the amount Joran is alleged to have received.
I haven't seen the Indictment yet, but I assume will be on PACER shortly. [Update: Here's a copy.]One thing I haven't seen (and don't expect to): Whose idea was it for Joran to contact Kelly? Did Joran come up with it, or did the Holloway camp (i.e. detectives)get word to him that such an overture would be welcome?
In any event, Joran has bigger problems than this extortion case. He'd probably welcome extradition to the U.S. as a way to get out of prison in Peru, but I don't see that happening. Here's the Interpol warrant for his arrest on the Alabama charges and their press release on the cooperative arrest efforts of Chile and Peru.
It's not entirely clear when Interpol and the U.S. issued the warrants, but it appears to be June 3, which is after Flores was killed. The treaty between Peru and the U.S. would also govern which country gets first dibs, although if I remember correctly, it also provided they could agree to what ever they wanted.