BCF have a fairly wide range of Tradie branded "trunks"
Most of the styles BCF sell are graphic heavy and most are the quick dry variety.
Anyway they have a selection of styles on clearance from $5 PER PAIR
These include:
Blood bath $7
https://www.bcf.com.au/p/tradie-mens-blood-bath-trunks/M6141…
Exotic $8
https://www.bcf.com.au/p/tradie-mens-exotic-trunks/M61419301…
Eel eat you $5
https://www.bcf.com.au/p/tradie-mens-eel-eat-you-trunk/M6062…
Shark bait $5
https://www.bcf.com.au/p/tradie-mens-shark-bait-trunk/M60571…
Sizes up to 2XL
Availability varies by style
FYI I paid $7 for a pair of Blood Bath trunks and when I went to Taylor's Beach NSW store to pick them up, all their clearance clothing was 30% off the reduced price.
So they refunded my online order and I bought the trunks instore for $4.90
If you live close to a BCF store might be worth seeing if they have a similar instore promotion.
I think mostly its C&C.