Greenfield
Adventurer
But if they can bypass the gold cost with a good dice roll...
Personally I am not all that worried about the spellcraft check in crafting items so while I don't often allow taking 10 on this I would. As long as they have the proper feats and spent the time and money that is all I am concerned. As others have mentioned the real limit is the cost in gold and none of my players is all that rich in the first place.
By my quick count, that's about 19 items a 3rd level caster can craft. If you are modifying the caster level to be based on the required spells, however, it seems they could craft Pearls of Power (presently CL 17), since they require the caster be able to cast spells of the relevamt level.
There is that... will they even take the feat if they can't make what they want until level X? At that point I guess you ask yourself if magic item crafting really even adds anything to the game. I suppose that depends on how common magic items are. If they're common, ditch the crafting system and just let players find or buy what they want. All they lose is the discount.
If crafting is the only way they can get the item they want, well maybe the feat is worth it.
It seems inconsistent to have a system for crafting objects mundane and masterwork, but not magical.