Where can i find a Sherri Hill 9230 cheap?

I saw this dress and its very pretty and i think it would go well with our homecoming theme this year. Well, the dress is $300 and i don't want to spend that much money on a homecoming dress. does anyone know a website or anything where i can get it for maybe 100-130 dollars? I have asked this questioned before and the people that answered it were all wrong. Can someone help me please? It will be greatly appreciated!