In my pursuit of secondhand Transformers on Gumtree and Facebook, I've realised there's something that annoys almost more than anything else: bad postage quotes.

1 seller on Gumtree wanted $30 for postage. It was a Xiaomi Soundwave and no way would it be close to that. Just didn't even respond.

Another seller on Facebook who, when asked how much postage was, just said 'I don't know'. I said, 'no worries. Thanks anyways,' and didn't pursue it further. At least say, I'll get a quote/ask post office or something....