If they are stain free and in "nice used" condition... sell an individual peice (like a onesie or bodysuit) for about $.50 up to $1.00
Anything with a stain, tear, hole, missing button, etc- no matter how small should be about $.25
PLEASE pin outfits/sets together. and sell them together. it is so frustrating to find a bunch of cute "bottoms", but all the matching tops have sold... or find baby hats that don't match any of the clothing! I am willing to spend a few dollars on a nice "set"
Good quality baby formal clothes and dresses could go from $5.00 to $10.00... at a garage sale.
Baby Shoes - maybe $2.00 in good condition
Price clothes in sets, and if you can organize clothes by sizes like
newborn and 0-3 months
3-6 months
6-9 months
9-12 months
etc...
nothing is more frustrating than digging through bins with no organization.
Also... consider offering a "take it all" price for all the boys clothes... and one for all the girls clothes. If someone buys the whole lot they'll pay (maybe $50 or $75)... you could hold off on a price and just put a sign that says the prices of items, and also "or make an offer for the entire boys lot"
Good Luck!
-M.