Seems pretty cheap for branded underwear
More cheap underwear here
https://www.catch.com.au/event/wardrobe-staples-buy-2-save-5…
Apparel & Underwear - Buy 2 Save 50%
Applies to products labelled with this tag. Excludes delivery and/or use of gift cards. Only available while stocks last and while advertised. Not in conjunction with any other offer. Discount applied at cart. Catch reserves the right to modify or cancel deals at any time.
How 10? Says 5