I noticed a couple of deals using this coupon but couldn't see an actual deal for it posted anywhere. Eligible products will have a banner and the terms listed on the page.
A quick check has found that several Kogan products including monitors are eligible, e.g. Kogan 24" QHD IPS FreeSync 75hz Monitor $209.
*Use the discount code “TECHTREAT” to get Free Shipping on eligible products at checkout. The Free Shipping offer excludes products and Presale products. Free shipping is not applicable to commercial or wholesale orders, or orders to delivery addresses outside mainland Australia (Free Shipping is applicable to Tasmania). Kogan.com reserves the right to not ship to some remote or rural locations. Offer ends 2 December 2020 at 11:59PM (AEDT) unless extended. For instructions on how to redeem a discount code, click here.