I think 10k for the item is totally fine. Sure it never runs out of charges, but you can only ever use it once a day.[q/uote]
Well, once a day is plenty for this spell.
And about the widget...say your party is down 100 hp (very possible as low as level 4). That's ten minutes you have to spend healing. At that level that's going to cut into your buffs something fierce. In fact I rather like the widget of cure minor because worrying about magical healing is silly. In core D&D you either A) have dedicated healing or B) go back to town after every fight.
That's a false dichotomy. There are actually some other options besides A and B. I play in groups that have no healing, and they don't go back to town after every fight (indeed, just assuming one always has the luxury to go back to town after every fight is a lot to take for granted).