Obviously the links in this post are NSFW!
So you actually had an egg that was wireless as far as the controller was concerned, but still had a string for retrieval? Hmm, haven't seen too many eggs like that. JJ's sells some stuff through Passion Parties for anal play, but nothing like that, more along the lines of graduated beads and vibrating plugs, and the only eggs are wired.
As far as intarweb sites are concerned, it seems kinda hit or miss to me on the sites, some look kinda shady, but might be fine. Honestly, if possible, I'd go to a local store if you have one, and check otu some products there.
Other wise, maybe look around for a good price on this:
http://www.docjohnson.com/products2.aspx?i=&p=egg&cat=0&co=0&l=0&w=0&m=0&u=&u2=&u3=&v=0
Doc Johnson makes some pretty good products. Their cyber skin stuff is pretty nice. You can browse all around their website, but only retailers can order from them. If you see something you like, you'll just have to do a google search for online retailers selling it.
Apparently they also make remote control beads and plugs, though I didn't see them on their main site:
http://www.nawtythings.com/remote2.html
Oh, and for Shawn: