I noticed that no one had yet responded to your post. I didn't want to jump the gun in case you got a great offer. I have some fibrous root - Wax Begonia 'Prelude Scarlet.' They are a very pretty bright red flower and get a red edging on bright medium green leaves. I love them and grow them outside in the summer. They are not hardy here in the winter, however. So rather than having to discard them (since I already have lots in a pot in the house over the winter), I would love to trade them for some of your Amaryllis. I probably have at least 4-6 plants available to trade. Let me know if you are interested. Here is a link to a photo of them early this summer.
Sue

Here is a link that might be useful: {{gwi:72255}}

Would your Amaryllis be hardy to zone 7 ? If so...I have some beautiful dark leafy Angel Wing Begonias that are blooming a beautiful red right now. These are good sized plants that I've had potted up and growing all summer.

I've sent you an email.