There are several reasons you SHOULD NOT spend more than $75 (if you can more than $50) on your prom dress.
You’ll probably only wear it once. The memory of the dress will only live in photos in your mom’s living room. Unless you turn into one of those people who wear their high school lettermen jacket in college, it’s not the greatest night of your life (trust me, you’ll have many more). Your local thrift store (especially Salvation Army and Goodwill) are full of budget prom dress options for under $10, that you can “alter” to fit your style (for inspiration, watch the 80’s Molly Ringwald movie “Pretty in Pink”).