Cricket Australia has recovered almost 3000 scalped tickets for December's Ashes Test in Perth.
CA said the 2890 tickets were being sold on eBay for the third Test of Australia's five-Test series against England.
The tickets will be placed back on sale through CA channels next Monday in what the sport's governing body is a warning to scalpers.
"This is a very clear message to those who try to take advantage of the system and scalp tickets at inflated prices," CA's executive general manager, events and leagues, Anthony Everard, said in a statement.
"We will identify and cancel tickets.
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"Our message to all fans is to not support this practice.
"Whilst we understand this leads to disappointment with some days of our Tests sold out, you should only purchase from official ticket agencies to ensure you only pay the official prices."
Everard said fans buying tickets from unauthorised resellers, such as eBay, Viagogo, Ticketmaster Resale and Gumtree, risked paying too much or being given invalid tickets.
"Unfortunately we are unable to assist fans or verify any tickets purchased through resellers," he said.
