The Spellcraft check is not going to do a very good job of making up for not having to spend XP if the DC is 5 + caster level and you can take 10. That means a caster with Int 10 and 1 rank in Spellcraft can create up to a 9th-caster-level item with no chance of failure. What's the point?
I was thinking of a cleric or druid having a different stat for spellcasting than you use for Spellcraft checks.
The point is that you can also create items for which you do not have the requisite spells known / memorized (in some cases).
For each prereq you're missing, the DC increases by 5.
I believe you can also speed up the process by trying to make it with a higher DC as well.
PF SRD said:The creator also needs a fairly quiet, comfortable, and well-lit place in which to work. Any place suitable for preparing spells is suitable for making items. Creating an item requires 8 hours of work per 1,000 gp in the item's base price (or fraction thereof), with a minimum of at least 8 hours. Potions and scrolls are an exception to this rule; they can take as little as 2 hours to create (if their base price is 250 gp or less). Scrolls and potions whose base price is more than 250 gp, but less than 1,000 gp, take 8 hours to create, just like any other magic item. The character must spend the gold at the beginning of the construction process. Regardless of the time needed for construction, a caster can create no more than one magic item per day. This process can be accelerated to 4 hours of work per 1,000 gp in the item's base price (or fraction thereof) by increasing the DC to create the item by 5.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.