A viable way to save money on your wedding dress is to buy one from a wedding dress website with listings online.
The two most popular websites in Australia in this arena seem to be www.idogowns.com.au and www.stillwhite.com.au. Wedding gowns can also be found on ebay and gumtree. The listings here are often from recent brides or sometimes from businesses that sell preloved and/or designer sample gowns.
My observations are that the specialist sites are easier to find and use for the purpose of finding wedding dresses.
The key to buying a dress online from a recent bride is to read the listing VERY carefully. If the dress is advertised as worn once, see if there are any wedding photos. If there are not, ask the seller for some.
If everything seems OK, ask to try the dress on. Go with your mum, female relative or a trusted friend. Try the dress on. Inspect the dress carefully especially around the hem. Check the fastenings - buttons, zippers, hook and eyes. Hold the dress up in different light to check for marks. Check tulle especially carefully as it is prone to tear.
Ask if the dress has been worn on gravel because nothing will shred the hemline of a tulle or lace dress faster than gravel. If it has, check extra carefully around the hemline.
If the gown has been worn at the beach, check for discolouration around the hemline. This cannot be cleaned out through dry cleaning or specialist bridal cleaning - it needs to be cut from the hemline. This is a workable solution if you are shorter than the seller or the seller wore very high heels, but if you are the same height as the seller or taller, then your dress will be too short when the discoloured portion of the dress around the hemline is removed.
Wedding dresses should ideally be cleaned as soon as possible after the wedding for the best chance of getting any marks/stains out of the dress particularly any marks under the arm which can oxidise if left untreated for too long.
Be wary of any listing where the brides claim that they did not get their gown cleaned after their wedding because of the details on it or because no dry cleaners wanted to clean it because of the delicate beadwork. This is incorrect as specialist bridal cleaners such as Carson's Bridal Valet at St Ives or Vivian's Specialist Bridal Cleaners at West Hoxton Park clean these exact dresses on a daily basis. It is generally code for the seller did not want to spend any extra money getting their wedding dress cleaned after the wedding. This expense will now become your expense and your risk and adds to the purchase price for you of that particular wedding dress.
A consideration to keep in mind however is, that if you find a dress on one of these sites that you want to try on from a recent bride, you are making a special trip to try on this one gown. This is then multiplied if you want to try on several individual gowns from several recent brides.