No. "My current buy back" meant price offered to me and the general public. Currently $553 BTW, reading this thread- careful XRF doesn't dismiss genuine sovererigns. Sydney Mints can read greater than 22 carat on both Au/Ag alloy and Au/Cu gilded coins.
They only buy pure bullion which is except from GST for spot or at least they used to ( I have not checked lately ) I doubt any dealer in Australia would be silly enough to offer spot buy back prices for bullion grade sovereigns.
A lot of talk. Money on the table would indicate between $675 and $725 street price on the secondary market.
Of course??? Not in my experience. Private secondary market sales on or about dealer buyback price. Experienced collectors know where to check prices and adjust for their own costs. Public secondary market sales are higher but can't really take these prices at face value. https://www.ebay.com.au/itm/233781842083