CRGreathouse said:
A non-mighty bow with this ring is not as good as a mighty bow with one more point of enhancement (costing 4000x+2400 gp, where x is the non-mighty bow's enhancement). Thus, the cost should be based on the 'default' enhancement:
0: 2400 gp
1: 6400 gp
2: 10400 gp
etc.
With one exception.
The ring is not
bound to one single bow.
It can be used with any bow, hence, it should be worth about equivalent to what your chart indicates based on default enhancement.
Also, where did you get your equation?
It should be 2000xx + 2400 GP, correct?
0: 2400 gp
1: 4400 gp
2: 10400 gp
3: 20400 gp
4: 34400 gp
5: 52400 gp (if +6 magic +5 mighty composite longbows existed)
So, your ceiling for a single specific "average worth" (i.e. on one particular bow) is less than 20,733 GP (on average). Granted, this is a ceiling, so if we were talking a single bow, it should be less than this number. Since we are talking any bow, however, you have to increase the cost back up some to balance out the utility.
So, 20,000 GP seems reasonable since a) you will not use this on +3 or higher bows that often (limitation) and b) you can use it on any bow (advantage). These tend to cancel out, especially as archers gain levels and acquire better bows.
Also, the only reason people think it should be fairly cheap in the first place is due to the broken linear mighty bow creation rules.
