where do you buy bulk spices online?

I thought I asked this question before, a year or two ago, but I cannot find it. Maybe I just thought about asking?

Where do you buy bulk spices online?

While I very much enjoy Penzey's statement about Republicans, their prices seem extravagant to me. I'm looking for cheaper solutions. I checked Costco, but they don't have much for spices. I spent a lot of time roaming different websites, and I found what I thought was a very good choice, until I reached the point to register on the website and realized that they intend only to commerce with actual businesses, not individuals. I don't know why my legal status makes any difference for shipping a product, but apparently it matters to them.

So... where do you buy bulk spices? I'm stocking up on lots of things, including powdered/dried foods and canned cat foods. More on that topic later.