There's the value detergents like
Surf Front & Top Loader Laundry Liquid Tropical Lily, 4L $16.5 or
Fab Perfume Indulgence Gold Absolute Laundry Powder Detergent, 3.8 Kilograms $14.5
and then there are "premium" detergents like
Tide Advanced Power Oxi Liquid Detergent 81 Loads 4.43 L $59.99
I'm sure someone knows better examples of both but thats not the point here.
Both types have 5 stars ratings and both have equal number of ratings which possibly means equal number of people buying both types of detergents.
I personally don't understand the benefits of expensive detergent. Why would someone spend so much on it? Does it really make any difference? In the end its soap isn't it? My clothes have turned out fine after years of washing with inexpensive detergents (I go for the mid-value detergents most of the times). So I'm curious. Which one do you use and are there any remarkable benefits of expensive detergents?
OMO capsules are frequently half-price at Coles. The 17-pack Ultimate is currently $10 on Amazon which would last me 17 weeks. Normal blue capsules are even cheaper when on offer.
https://www.amazon.com.au/OMO-LAUNDRY-CAPSULES-ULTIMATE-1371…
It's meant to have more than just soap but also stain removal chemicals, enzymes to break down sweat patches, built-in softener etc. To what extent these actually work no idea and haven't bothered to try.
Tide is not sold here, that's a US imported version and will have significant markups so not a direct comparison. Tide is actually basic tier in the USA although that one you linked has added Oxi stuff.