How much does your FG dress cost?

I'm having a bit of sticker shock over the prices of flower girl dresses! The one that matches my BM dresses is $150 I feel like for a 5 year old who is going to outgrow it in a year, and only wear it once, its a bit much. Plus her mom is a BM and already shelling out for her BM dress. How much is the norm for FG dresses? Any suggestions for cheaper places to look? TIA!