Gerber Childrenswear takes 65% off as part of its Spring Cleaning Sale, with prices starting at $1.05. (Discount is taken in-cart.) Even better, get an extra 15% off via coupon code "13SAVE15EFM". Combined, that's the best sale we've seen from Gerber Childrenswear. Shipping is a flat-rate $6.

A best bet is its Gerber Short Sleeved New Born Onesies 5-Pack for an in-cart price of $3.85 before the above coupon, $3.27 after. With $6 for shipping. That's $1.85 per onesie, $2 under our mention from last summer, and among the least expensive bodysuits we've seen. They're available in sizes 0-3 months.