Where to buy another IPCamTalk HDBW4432F-IS?

[Craig Conrad]

I bought (from Amazon) the "IP Cam Talk 4 MP IR Fixed Mini Dome Network Camera, 2.8mm, IPCT-HDBW4432F-IS" a few months ago and it would be perfect in two more places for me. But it is no longer available at Amazon. Is there another place to buy this (or its equivalent or its replacement)?

Thanks, Craig