While Iâve seen brides spend as little as $200 on their wedding flowers and as much as $20,000, the cost will vary depending on your taste and the number of flowers youâll need. To give you a better idea of what you can expect to spend, the average cost by type of wedding arrangement is below: Bridal Bouquets : $100-150/each Bridesmaids Bouquets : $50-90/each