Amazon cuts at least 70% off a selection of Baby boys' clothing, shoes, and accessories. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping.) A couple best bets:
Belk offers the Nautica Toddler Boys' Basic Tuxedo in Black for $54. Coupon code "34672071" cuts it to $44. With $9.50 for shipping, that's $46 off list and the lowest total price we could find. It's available in sizes 2T to 4T.