The tightly held prize account Priceline is out to pitch.
The pharmacy chain is currently reviewing its multi million dollar account, held by PHD in Melbourne for nine years.
A spokesman said: "Priceline is reviewing its media agency services with incumbent PHD part of the process and a decision to be made by June."
PHD had no comment.
The account was said to be valued at $13 million when PHD took over the account in 2014.
Priceline last year launched its Glad You Asked Spring campaign via creative agency Whippet.
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