Lots of eggs are laid in the winter and spring. Lots of juveniles are available in late summer and fall. Newts are available year round. It takes a little work searching. I keep an eye on what is offered on caudata.org, faunaclassifieds, and kingsnake.com. I try to purchase c.b. Their are lots of facebook groups that offer newts for sale. Since it is against facebook policy to offer animals for sale people use inventive ways to post what they have for sale. Caudata.org is a good place to start looking for available salamanders.