Link: https://www.tomshardware.com/pc-components/ddr5/retailer-denies-memory-return-due-to-4x-increase-in-ddr5-pricing-says-price-increase-would-mean-an-upgrade-for-the-customer-australian-retailer-refuses-to-replace-faulty-corsair-kit

Retailer denies memory replacement due to 4x increase in DDR5 pricing, says price increase would equate to an 'upgrade' for the customer — Australian retailer refuses to replace faulty Corsair kit

I don't know anything about Australian laws, but I would assume that would be an easy lawsuit to win, no?

No, the law says that you should get a replacement or a refund. They offered the refund at the original price, not at current market price. It's a shitty situation, but not illegal.

If it's classed as a "major" fault that essentially renders it unusable, the customer gets to choose the remedy, not the retailer.

This is usually so the customer can get their money back for a shit product, but there's nothing stopping them from a replacement.

Umart's claim that it's "an upgrade" doesn't hold much weight. If you buy X gigabytes of ram and it fails and you want a replacement with the same X gigabytes of ram, that's not an upgrade. It's restoring the status quo of the original purchase where they got a physical quantity of a product.

After dealing with Scorptec a few times, I stopped buying off Umart.

I rarely buy PC parts, but when I do it's with Scorptec.