I can see both sides of this argument, but to be honest, AUD31 for 9 DVDs!!! all the production, packaging, creating the advert, taking the time to put it up on ebay etc. Just how much profit is this guy making? I'd say pretty much nothing.
I tend to think his reply is honest and that he is merely getting these out to the community.
DVDs are dirt cheap. So are labels and plastic envelopes for them.
How much profit is he making? I'd estimate about $29 minus eBay fees.