A big fat Greek wedding just got cheaper in Adelaide as brides can now snag a designer dress for as little as $15 after award-winning Bridal on Pulteney is up for auction in a bid to recover debts.

Prices of wedding garments now range from $15-$400, with dresses retailing for thousands now on offer at around 8 per cent of the cost. For instance a Stella branded gown usually selling for around $3,250 is on sale for less than $20.

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The dresses need to be collected in-store by Thursday, 5 March.

The liquidator of Romeo Investments (Aust) Pty Ltd said that about 70 customers are set to be affected by the closure.