| Bober |
Spiderclimb is a 2nd level spell, so it's either 300gp (Clerics, Druid, Wizards) or 400gp (Sorcerers, Bards, Paladins, Rangers) depending on who's making it. I don't think you can brew one with CL 1 or 2. A wizard has to be level 3 to know such a spell, so CL3 should be the minimum you can get.
As for the chatter ring, it's a cursed item; that's why it doesn't have a cost. It says it's similar to a Ring of Eloquence, so if I were to sell it I would try to charge the same as that item. Maybe a little less, to make it easier to sell.
Since a Ring of Eloquence costs 1750 to make and has a base price of 3500, I would probably try to sell it at around 3250, going no lower than 2750 if the person interested wants to fight me on the price. Going lower would be suspicious, and not worth the risk of getting caught.