Rise of the Runelords
The Sisterhood of Steel
Arcanus Invenio , Vega’s collected book of knowledge
Buying and Upgrading Items
Magnimar: 12,800 gp (15,360 gp with Lucrezia)
Turtlepoint: 2,500 gp (3,000 gp with Lucrezia)
if the cost of what is being paid is 90% of the unmodified Gp limit then there would be an 80% roll. If that fails, then the item would be available the next week.
Price of the upgrade determines availability.