Walmart cuts up to 75% off a selection of men's, women's, kids', and baby swimwear, with prices starting from $4.97$4.66. (Prices are as marked.) Shipping adds $4.97 or get free shipping on orders of $50 or more. Some sizes are limited. A couple of best bets:
Designed 2B Sweet via Rakuten Shopping offers these Girls' Dress-Up Tutu Skirts in 16 styles (Yellow pictured) for $7.99 with free shipping. That's the lowest total price we could find by $5. Most tutus are suitable for children aged two to eight and feature a 12 to 24" elastic waistband.