Prom/ Formal Dresses

Iam a high schoo student and im trying to sell my old prom dresses so i can buy a new one for my senior prom this year coming up in three months..I have 4 prom/ formal dresses i am trying to sell they all are floor length..i have purchased 2 last year for two different proms one of them is white with red roses and has the ball gown shape it is size 11 i bought it for $500 and i am willing to sell it for 300 but i will nagotiate at a resonable price.. I have a lavender one with lavender flower in beeds it is size 12 i am selling it at $150.. I have a black one with a silver beeding v-cut top it is a size large and i am selling it for $150.. The last dress is a fusha pink color with sparkles on it i am selling it for $100..i do have pictures on my phone and will be happy to email them to anybody interested in the dresses