Just got word back from my rep. No they do not sell the remote separately
Put it this way, I have sold a ton of these, every one has failed. I have one in our 23 for about 2 years. Were on the 4th remote. Works great until it doesn't. the screen will start reading in chinese and then it will just one day stop working. Happens too every one. Just a matter of time. Ive spoken with the manufacture several times and they are going to be working on a different remote, however they don't know when it will be available. The wired one is bulletproof.