Buy Stone Flesh rings

[Skarg]

I think it's pretty clear that some items were not entirely thought out in terms of prices and ST costs, and Stone Flesh is one of the clearer examples because you can compare it to +4 Armor enchantment and see it's better (doesn't require armor, doesn't get destroyed when armor is destroyed yet costs less.

One could do worse than assume all magic items have the same maintenance cost as their spells unless they say otherwise, and/or to just make it so.