Fair market value

What is the price at which steem can go no lower? I mean there must be a price at which steem becomes too good of a buy for it to fall any further. If this is true then I'd very much like to know what that price is so I'll know it's time to start buying. My very much uneducated guess is around $.25 but I base that on nothing whatsoever. It's just a wild guess on my part.
I am hoping for enlightenment via the comments.