As far as I can determine, based on visits to four merchants, two listed as 10pp+ and two listed as 20pp+, the correct price for this spell is 20.9.9.7... Both Freeport vendors had it listed as this as well as the four Library merchants and the Bazaar merchant...
Edited, Oct 22nd 2012 10:13am by Lilpapei
Edited, Oct 22nd 2012 6:09pm by Lilpapei
Edited, Dec 8th 2012 12:37pm by Lilpapei
Edited, Dec 8th 2012 12:38pm by Lilpapei