Finn, you are and will always be the Zoanthid Guru....I'm sure you'll have it the way you want it soon!!!
Dlu, there's a lot of great Zoanthids available here on RF. Where do you live? If you do live in the Puget Sound area, there's several great LFS that have nice selections of Zoanthids as well. I have seen LOTS of nice stuff at Barrier Reef!!
Yes, Ebay can also be a good source, but use caution!! There are lots of great Ebay sellers out there, but there are also some very bad ones. I recently learned a hard lesson and fortunately, Paypal was able to stop payment and it didn't cost me any money...but it could have. If using Ebay, pay close attention to feedback of the sellers you're looking at. Also make sure you read the descriptions very well. Some can be pretty deceiving.
Another word of caution, don't give into the "Zoanthid Hype." Buy what you like. Don't let yourself be drawn into the craziness of the "Newest, Rarest and Coolest Zoanthid to hit the market!!" That's what causes Zoanthids that were actually pretty commonly traded a couple of years ago to sell for hundreds of dollars for a single polyp or two now. The "New Rare Purple Hornet" is a prime example. Soooo....buy what you like...not what everyone makes you think you just HAVE to have. This is true with all corals, but this hype is especially dominant with Zoanthids and Acans lately.