Used to check out this forum quite a bit when I lived in the Houston area but have since moved to the great white north.

I'm looking for someone selling a few small citrandarin or citrange seedlings that would be hardy close to 0 degrees F. Does anyone have some they're willing to sell?

I've checked with Stan McKenzie but he seems to be out of stock currently. Other recommendations on reliable sources would be welcome too!

Tim, if you're ok with seedlings then consider Woodlander's: http://www.woodlanders.net/index.cfm?fuseaction=plants.main&alphaKey=C&whichName=genus&showIntro=0
Scroll down to the Citrus selections...they have several citranges, but I'd recommend the citrumello 'Dunstan'. It might need some protection, especially when young, but people have reported it taking zero.

You are dreaming if you think any citrus is hardy to 0F.