"I did it for a bit of a joke, for some fun and it has been great, apart from a few haters," Shefford said.
"No matter what you do there are going to be some people who pull negative out of it."
Shefford, who had run similar auctions when he was a volunteer firefighter, said he would donate anything above his $100 to charity.
"I'll keep my $100 and pay any fees but anything more than that I'm donating to Ronald McDonald House," he said.
"I did a similar thing raising money for the Fire Service by selling scrap metal when I was a volunteer at Geraldine."
There were 37 bids as at 4.57pm today, 264,854 page views and 4410 people had added the auction to their watchlist.
Shefford engaged with 500 people on the site who had asked questions about the auction.