On Quellious (rodcet) this is usually around 4k (presently) though I have seen several in baz at the same time for 2-3k. For mana regen items this jumped out compared to the other prices. Obviously the class restriction limits the market.
Just got one of these for my lvl 47 bst. Best item she has, only 5k on seventh right after merge with lanys. Saw them as low as 6k before merge. With this earring I average about 250 damage with my ice spear spell(150 damage). I have solstice earring in other ear, bought all the ingrediants, and that cost me about 4k. With 2 +1 mana regen and KEI never have to med, even after I have to heal myself, which with bst heals can drain mana, lol. So to any bst's that can afford this I would definately suggest getting one, best 5k I've ever spent.
I think this items drops a bit too much cus I just bought it on Vallon Zek for 6000pp. But aside from that this item is friggn great. The stats themselves give exactly what any BST needs and a good amount even if you're in your 30's or 40's but even then the main thing you get is a permanent damage focus for all BST cold nukes, some attack boost, and 1 mana regen. This is definately worth getting more than a solstice earring for beastlords and, as the case is on VZ server, it is a lot cheaper being that not many people make the solstice earring stuff now...
had 2 of these drop last night at 5-spawns camp. no beastlord in group, so we just randomed em off. hopin it'll sell for enough to buy a couple more runes.