Stoneplate from Ultimate Equipment should cost 1800gp, but it is displayed as 450gp

for the reason for the error. on p.53 of UE it says that:”Stone weapons cost a quarter as much as base items of their type, and weigh 75% of what base items of their type do.” That is coded in ue_equipmods.lst as: Stone               KEY:Material ~ Stone                        NAMEOPT:NORMAL      TYPE:BaseMaterial.Mundane.Ammunition.Armor.Shield.Weapon.Instruments.Tools.Goods    COST (BASECOST)*-0.75   VISIBLE:QUALIFY ITYPE:Stone                                                                     SOURCEPAGE:p.53                                             !PRETYPE:1,EQMODTYPE=Mundane    !PRETYPE:1,Metal,Wooden !PRETYPE:1,Artisan,Spell Component

which then interacts with the definition of Stoneplate in ue_equip_arms_armor.lst which says Stoneplate                              PROFICIENCY:ARMOR|Stoneplate            TYPE:Armor.Heavy.ArmorProfHeavy.Suit.Standard                       COST:1800   WT:75       ACCHECK:-6      EQMOD:Material ~ Stone                                                                                  MAXDEX:1                                            SOURCEPAGE:p.14 SPELLFAILURE:35                                                                                                                         BONUS:COMBAT|AC|9|TYPE=Armor|PREVAREQ:DisableArmorBonus,0

and makes the cost = basecost-0.75 or 1800-1350=450.

the description on page 53 says this is true of weapons and says that armor like stoneplate are an exception. I think the fix is to remove the EQMOD term from the Stoneplate definition (since it is an exception). I will post a modified version of the ue_equip_arms_armor.lst file after verifying the price is shown correctly at 1800.

modified file which deletes the EQMOD: term for the Stoneplate definition

This appears to have been fixed by another data monkey by making a separate Stone EQMOD for weapons and removing the cost multiplier.