Where to sell/trade store credit for Babyboo?

Hello all! I am Canadian, and I have a store credit for BABYBOO in AUD, and I'm not likely to use it before it expires in five months. After taxes and shipping, it just doesn't make sense for me to order from Australia. Does anyone know where the best place would be to sell it? Maybe another subreddit, or a facebook group? I see this sub has a biweekly buy/sell thread but there has not been one posted since last year.