Vanti-- couple of things. I got River's $99 Sub, and I love it. Very smooth sweep. Bracelet and case are great. Pearl sucks, but they all do (I've heard that even the MBW pearls leave a lot to be desired). You may want to take a look at this thread, where BK, our resident Sub Cannibal(tm) went into all the tells of River's $99 Sub:
http://replica-watch.info/forum/viewtop ... 318#197318
BTW, Pug is right-- River is the ONLY dealer to my knowledge who sells a "real" ETA copy. Although some other dealers advertise having an "ETA Copy," in reality, it's nothing of the sort.
If River can't get anymore of the ETA Copy Sub, I'd suggest two alternatives. First, contact Ruby and ask her if she could possibly source the watch for you. She's generally pretty good about being able to find watches. If that doesn't work, I'd contact TTK (assuming you've got a lot of patience and are willing to follow his rules to the letter) and get one of his Noobmariners. TTK's Subs have the older Asian 21.6 beat rate, but the case and bracelet are identical to River's. So, aesthetically, it'll be the same.
If you're really dying to get an ETA, Silix sells one for $115, although they have some real problems visually (mainly, the rehaut is too short and conical).