It looks like Glasshouse Works has it in stock under the name 42345 ERYTHRINA INDICA PICTA. Zone 9 Tropicals has it listed but is out of stock. You could contact Wayne to see if they'll be getting more in. Zone 9's plants are significantly larger then Glasshouse. Their plants are bigger then most other online nurseries.
http://www.zone9tropicals.com/erythrina-indica-picta-sunshine-tree-p-363.html

Here is a link that might be useful: glasshouse works

Thank you so much! I've contacted Zone 9 and they were somewhat helpful, but out of stock. Should I wait? I really know nothing about the plant and need help. But saw the tree growing beautifully in Sarasota, FL. Want to grow in New Orleans, LA. I am zone 9.

If Wayne said they'd be getting more in I'd wait for Zone 9 but if he wasn't sure you might want to look elsewhere. I've bought several times from Glasshouse and have never had a problem but their plants are usually pretty small. I have heard of other people having problems with getting their plants but like I said I've always been happy. Take a look at their feedback on DG.

Here is a link that might be useful: Glasshouse works