All is not totally lost gadgetmumma.
You can buy a step down transformer, that will allow you to use U.S. appliances here....like this one
http://www.flanagan.com.au/stepdown.htmYou will have to make sure you get the correct unit. Search the internet to compare units and prices.
They are not a cheap item, a bit bulky, but it will save you the hassle of selling yours. You are more likely to sell it on ebay (worldwide), but will have to factor in postage as well, which will not be cheap.
Unfortunately you are not the only one to be caught with the voltage difference before.