If it's legal in your state then botanicalspiritshop seems like a good source. they won't ship plants to texas, though
I've purchased a few cuttings from undergroundroots and was highly satisfied. They're currently short on stock and say they ship a few every other week and will have a full inventory soon, that their plants have been a little slow growing this spring. Worth keeping an eye on them.
I also have a vendor I found actually on FB who sent me three absolutely beautiful salvia plants. He only accepts money order via mail, and doesn't sell anything except live salvia plants (so i don't think i'm breaking any sort of rule), highly recommend him. May take a little longer than you'd like but seems well worth it. If you or anyone else is interested I can provide the details.
These were the plants I received from him
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