There's a pretty wide range of trips in there priced from $500 through to $2500. Most are already 'discounted' so the 20% takes the price further south.
Couple of examples.
Brisbane to Cairns experience (do the trip on 4x4, yacht, trains and buses) 9 days - Was $1599, after the promo code $1360
Outback to the Red Centre - Adelaide to Alice Springs - 9 days. was $1399, after the promo code $1190
Outback to the top end - Adelaide to Darwin 14 days - was $2499, after promo code $2125
Red Centre experience - 3 days - was $399 after promo code $340.
I suspect the STA Travel promo code will expire by Monday as its marketed as an Australia Day deal.
- 89° - Hallensteins Polo Tops was $39.99 now $10. Free delivery for all orders over $50.
- 75° - Ozgameshop - Call of Duty Infinite Warfare Xbox One or PS4 only $31.99 plus free delivery using code POST
- 67° - Bonds up to 50% off sale + free shipping - women's briefs starting from $4, trunks for $15 a pop + more
- 61° - Phone accessories from $3 + free shipping at Dick Smith / Kogan. E.G. Ultra Slim Clear Case for iPhone 6 Plus/6S Plus for $3 delivered
- 50° - eBay 20% off Code stack - Dell XPS 13 7th Gen Intel Core i5 was $1899 now $1359 using code COMMIT20. Deal expires 22.01.2017