I picked up a Stendel's Wedding Band on Stormrage Horde side. With the +5 crit it is BiS for 19's, but it only takes level 11 to use. I wanted to get a price check on this too see if its of any worth to hold on to it so I figured this would be best place.
I have seen them go from anywhere around 1-5k although I could guess that it could , based on your realm, get much much higher. I know one realm where the going rate for 1 rings is between 10-25k when it goes for 1k or less generally. The best price probably for it would be around 2-3k though on average.