Amazon discounts a selection of Capezio leotards, with prices starting from $6.73. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping starts at around $5.) That's a price low by as much as $30. A couple of best bets:

• Capezio Girls' Diamond Strappy Camisole Leotard from $7.06 (pictured, low by as much as $28)
• Capezio Girls' Diamond Racerback Leotard from $7.07 (low by as much as $30)