Sherri Hill, Blush Prom, LaFemme, and Jasz Couture dresses for cheaper prices?

I am looking for these Sherri Hill dresses:
#7208 Strapless Peacock Princess Ball Gown
#9204 Backless Graphic Print Prom Gown with Train (this one comes in different prints that have different style numbers and are different prices)
#3400 Sweetheart Babydoll [...]