I buy clothes from ebay.
I would look past the ad because of your shipping. I learned that people mark up shipping, and that makes me mad. Not saying YOU do, but, I would immediately think, "$9.00? ".

I would also break it down to size. For Jonah, I wanted ONLY a certain time, and didn't want to spend two pennies on something I knew he wouldn't fit.

On a side note...I wasn't really sure why these clothes wouldn't fit the baby- assuming it is a girl? Maybe you could wait six months, and then sell TONS of the stuff as a large lot, including the clothes the baby would then have outgrown?