Not sure if they're any good… Got an email from JB:
Until Sunday get yourself $150 off^ the current ticketed price of a pair of Swann Xtreem Security Camera (3 Pack). Simply present the Exclusive Coupon at any store in Australia or buy online by visiting jbhifi.com.au, adding the product to your shopping cart & entering the Exclusive Coupon code in the space provided at checkout.
Limit of 1 each per Coupon. Available instore and online. While stocks last. Offer ends Sunday 29th May 2022.
You will need to accept marketing e-mail from JB Hi-Fi to receive these weekly offers. The coupon is not unique despite JB Hi-Fi's claim, but only 1 use per JB Hi-Fi account.