Well done! Congrats on your launch. I thought about a similar service too when I was pregnant and spoke with a few mommies and moms to be and abandoned the idea. I found the mommy network of family and friends giving you used baby clothes is a huge competitor.

With that being said though, I would probably try this service out, if I weren't in Japan. But I'd give it as one-time gift. Not sure I'd pay a monthly subscription for it.

Babies grow far to quickly for parents to subscribe to a single plan and the stockpile would be far too much to maintain... on a startup budget.

Why not try an exchange network, user to user?

Do you have kids?