Ring of Magical Device.

[SimonML]

So, now that the bard left the group, my party finds itself without a healer. Between magical potions, I decided to throw a wand of minor healing at them.
The problem is that the DC to activate such wand is really high (20) and that, so far, they have not managed to activate it a single time...

They have also found a magical ring (initially, a ring of spell knowledge I had put there for the bard) but have not so far identified it.
I am thinking about swapping it for a ring of "Use Magical Device" (+5 bonus on the skill and cost 2500GP).
I am also planning on ruling that it provides the bonus to an existing skill but do not provide training in said skill. So, an untrained PC could not just pick up the ring and hope to roll high... (the drawback is that I am earmarking the ring for the rogue, but I can live with that).

Anyway, I think my pricing is correct, but I'd like you guys' opinion.
Do you think it is a good idea? Or is that particular item left out of the official list for a reason?

[FuelDrop]

Oh noes, you just broke pathfinder forever! Game over man!

Nah, just messing with you. I reckon it makes a decent amount of sense, particularly if it was made by, say, a research wizard who wanted an extra edge when activating mysterious magic items. the price tag looks about right but AFB at the moment.

[Drejk]

You might consider a bit more direct approach giving them ring (or other item - maybe a chalice that has to be filled with water when used) that casts cure light wounds five times per day - it would cost 1,800 gp for command word item and 2,000 gp for use activated item and would heal 1d8+1 hp each time it is used.

There shouldn't be problems with item granting +5 to Use Magic Device as long as you keep an eye on items your party gets.

[SimonML]

That's not a bad idea either... I'll think about it..