I'm more wondering if she's being serious or just trying to get publicity. A while back somebody was auctioning the right to marry her. In the end she decided to give up on the idea as "I was very disappointed when I found out that the bids were not genuine - I would have been happy to marry anyone who came up with the cash."
Who seriously thinks that putting yourself up for marriage or sex on eBay would get real bids? You may get a couple but you're definately going to swamped by the sheer numbers of false bids. She denied that it was a publicity stunt for her company as well.

I'd be very surprised if Rosie Reid actually goes through with it all. The pessamistic view would be that she continues with the charade and then near the end cancels it due to some technicality. During this time she'll be busy selling her story to the highest bidder etc..