Ripley’s coupon on eBay?

Someone is trying to sell a free child admission or a 50% adult coupon on eBay for any of the 3 Ripley’s attractions. Bidding starts at a penny, and shipping is $2.99. They talk about a $7 savings, but after the $3 auction, I guess it would only be a $4 savings. The person with the auction seems to indicate they can provide as many of these as you need. I wonder if it is legit…