Examples only (outcomes may differ in individual cases):
A faulty toaster sets fire to Ben’s kitchen. Ben is entitled to compensation to make up for that loss and damage, not just to a refund for the faulty toaster.
Lina buys a car, which leaks oil on her driveway. A neighbour’s dog runs through the oil and into her house, dirtying the carpet. The car dealer does not have to pay for carpet cleaning, as the dealer could not predict that a dog would run through the oil and into the house – the damage was not 'reasonably foreseeable'.
Susan’s washing machine breaks down due to a fault. As a result, there is water damage to carpet in part of her house. The supplier would be responsible for the cost of replacing the carpet damaged by flooding from the faulty washing machine, because this loss could have been expected to result from the breach of a consumer guarantee.
Warren used a liquid cleaner according to instructions on the pack to remove a stain on his new curtains. The product badly damaged a curtain in the living room. As the curtain was new, the supplier would probably have to meet the cost of replacement. Compensation would be less for curtains in poorer condition.