According to data at costofwedding.com, nationally the average amount spent on a wedding dress is between $875 - $1458, and higher for designer labels, between $1749 - $2332. Shopping for past seasons' gowns with looks similar to this season's trends can help you make an unforgettable impression on you wedding day, without leaving a lasting depression in your bank account. We recently spotted these mark-downs, clearance, and modestly priced wedding gowns for under $800 by major fashion designers.