There doesn't appear to be much stock. PS4 has no stock near me but are a couple Australia wide, the PC and XB1 versions appear to have more copies in stock.

PS4: https://www.harveynorman.com.au/call-of-duty-black-ops-4-ps4...

XB1: https://www.harveynorman.com.au/call-of-duty-black-ops-4-xbo...