I've bought live plants from The Chile Woman (http://thechilewoman.com/
) for several years, and had good results with her hardened seedlings (it helps that they're only as far away as Indiana). She has a huge variety of chiles, tomatoes, and is about the only place that sells tomatillo seedlings that I've found. Quite a number are marked as good for patio or container growing.
Prices are NOT cheap, but quality is high.
What is patriotism, but the love of good things we ate in our childhood?
-- Lin Yutang