I've seen this Bracelet being auctioned for as low as 60k up to 100k on the Stromm server.
Bracers are a very hard slot to upgrade. Best ones I can think of, that are comparable to this, are Silver Chitin Wristbands, Bracer of Rotting Bile, and the Golem Forged Bracer. Silver Chitin go for 10k, Bracer of Rotting Bile for 6.5k, and Golemm Forged for 50k on Stromm.
Rarely do I ever see the Bracer of Rotting Bile for sale. Have never seen Ornate Chain Bracelet Patterns for sale, but I'd imagine they'd sell for about the same as this Stone Bracelet.
Except a BOB has less ac, way less hitpoints, no mana at all. The BOB is a quest, this is a drop. The BOB cannot be worn by shamans and can be worn by a number of other classes.
This also has a recommended level of 65 and the BOB has none. The trash mobs you have to kill in level 65 High Risk dungeons do more damage than the Kromzek Captain on his best day.
So, the only thing this has in common with the Bracer of Benevolence is that it happens to be able to be worn on the wrist slot. :P
They are fairly similar to be honest. here are the differences,
SBoBM has 5 more ac, 8 wis, 45 hps , 75 mana and a total of 25 raw saves
BoB on the otherhand has 29 raw saves, especially more MR which is primary on a PvP server (which i play on). And i sadly still wear a BoB, right next to my bracer of exploration :P.
So being right = being a jerk? /blink BoBs were a very nice item for their expansion and a perfectly acceptable reward for the risk. So is this bracer. Theres another similarity.