From the RFC website
Round 15 TicketingReserved Seat/Reserved Bay:Round 15 ballot registrations are now closed. For Richmond members who successfully entered the Round 15 ballot, Richmond will do its best to allocate members as close as possible to their usual area, and will communicate the outcome of the ballot on Thursday, June 23. Richmond anticipates tickets to be available in members' MyRichmond account on Friday, June 24 if successful in the ballot.
Any eligible member who missed the opportunity to enter the Round 15 ballot will have access to tickets in the GA on-sale tomorrow, Thursday, June 24. Members in this situation will be emailed details the morning of Thursday, June 24 prior to the on-sale.
General Admission/Roaming Tiger:Tickets will be available via Ticketek from 4.00pm-5.00pm AEST on Thursday, June 24.
Eligible GA and Roaming Tiger members will be emailed on the afternoon of Wednesday, June 23 with their member barcode required to redeem tickets in the Round 15 on-sale. Please read this email carefully for all instructions.
General Public:At this stage, due to limited capacity, it is not anticipated that there will be any General Public tickets available.
https://www.richmondfc.com.au/news/962863/melbourne-crowds-to-return-this-weekendDon't think there will be any "sales". Just allocations to reserve seat members