You could send a check instead, payable to CASH. Although, your bank might get suspicious if hundreds of people start cashing small checks against your account.
That would be a pretty bad idea since checks include all the information someone needs to make hard to reverse withdrawals from your account. Knuth used to send checks but no longer does. See http://sunburn.stanford.edu/~knuth/news08.html.
FWIW, it sounds like the OP is in New Zealand.
Yes - It's for Trade Me, which is the dominant auction site in NZ - and has better trading stats per person than pretty much any national eBay site.