Blur Ring costs less than a Blur Spell

[Skarg]

Yes, even if you didn't increase the difficulty of making a Blur ring and were just thinking about supply & demand, the price would tend to go up as pretty much all people who see combat would benefit greatly from having a Blur ring.

Originally Posted by Steve Plambeck

If the item's spell was Summon Bear, that would save that initial 4 ST on turn 1, but then cost the 1 ST per turn normally required to continue that spell.

In this case, that would be a massive advantage, since each turn the user could choose to either maintain their current bear, or create a new uninjured bear anywhere in creation range, for the same 1 ST.