Amazon offers Prime members this Disney Infant Pixar Cars Cuddly Bodysuit 3-pack
with free shipping
. (Non-members can get free shipping with orders of $25 or more; otherwise, shipping adds $5.48.) That's $1.86 per suit, a buck under our October mention, and the lowest total price we could find for a Pixar Cars 3-pack by $10. Sales tax is added where applicable. They come in sizes 0 to 3 months or 3 to 6 months.
Of note, If you haven't done so yet, subscribing to Amazon Clothing Store emails will get you an additional 20% off of your total purchase price.