How much does it cost to buy 20 baby outfits?

It depends on what you mean by "baby outfit" and where you buy them. For the sake of the question, we'll use Babies R Us as your store of choice.

Baby girl's dress: $15 - $20 each

x 20 = $300 - $400

Baby girl matching outfit (top + pull-on pant): $10 - $20 each

x 20 = $200 - $400

Baby girl footie outfit: $10 - $15 each

x 20 = $200 - $300

Baby onesie (boy or girl): about $5 each

x 20 = $100

Baby boy matching outfit (top + pant): $15 - $30 each

x 20 = $300 - $600

Baby boy footie outfit: $10 - $20 each

x 20 = $200 - $r00