I bought Serena, Helsa, Stone Man and Woman last November/December for $30 each, all with free shipping. At $120 total for four when one with season pricing is $89, you cannot beat that deal, its an absolute steal. For the price I paid, I am extremely happy with the props. Excellent quality.
Would I honestly spend $90 on one though? For Serena or Stone Man maybe (they are by far my favorite).. but I don't know about the other two, especially Stone Woman. It's a cool prop but compared to the other two, it's very bland. My only concern with the life size props was the stands they come with. I expected them to be flimsy and they are. I never use the stands with similar props that I have anyway, though. I just buy 1/2" PVC and slide it over rebar.