JGA has updated their ERFS purchase page with the below details. I'm really tempted. It's worked out for everyone else in the thread that has purchased it already right?
Visa application Support including preparation of the following documents
We provide the materials as below.
a. Letter from travel agency (with their company letterhead) stating names of all visa applicants, contact number, date of travel, duration of stay, name & address of place to stay in Japan; must be signed and stamped with company’s stamp.
b. Details of tour itinerary (daily itinerary including hotel’s name and address) from travel agency printed on the travel company letterhead;
c. The certificate for completion of registration to the Entrants, Returnees Follow-up System (ERFS)