The only other option available recently was the MMC Replay with RRNet, those don't seem to be available anymore either, unless I don't know where to look. I got my setup probably 2 years ago now.
Good luck on eBay, those things have been going for top dollar!
Yeah, I don't think any ethernet product is available atm. The best bet would probably be to wait until the 64nic+ is available again, which should be fairly soon. AFAIK the 64nic+ will be sold directly by Jim Brain this time and not through a third party (CCCC) like last time.