Yep. There was one on eBay that I was very much wanting to buy. Unfortunately, according to the owner the receiver died so he cancelled the auction. It's off for repair and hopefully I'll have a chance to buy it when it comes back.
So far as I know the IC-730S was only sold in Japan. It's basically an IC-730 with a 10W PA. Current draw on receive should be lower than a normal IC-730 since the you won't have the bias current for the bigger PA. Otherwise it should be just the same as an IC-730.
I'm envious of your rig