I have found that any of John Scheepers, Van Engelen (Scheeper's sister site for large orders), and Brent & Becky's are superb in quality and service. I have ordered from both for years now.

I bought from Brent and Becky's as well last fall and was pleased.

Another one I liked was BuggyCrazy. Most of their bulbs are $1 a piece or less, and can be bought in small quantities.

Sue

Here is a link that might be useful: BuggyCrazy Bulbs

Scheepers (or Van Engelen if a lot) & Brent & Beckys. Brent & Becky have a nice chart in the catalog that tells which ones will bloom when, and how shade tolerant they are.

Brent & Becky's is my favorite, hands down, but I'm in a very different climate from California, and it may be that there are vendors who carry more that would be appropriate for you (B & B is in a similar climate to mine).