My take on this-whatever the item brings, it is still money in the charity/groups pocket. It may be way more that it's worth or not. it's not about me but about bringing funds to whatever cause i am supporting.
I've seen silent auction items go ridiculously high due to a bidding war. Others did not sell for their value. i just donated a fullsize quilt to a benifit. i don't know if it will be raffled or a silent auction item. i don't care how they use it. i gave it because i wanted to do something to help.