Manual edit, all I use are SQL Management Studio
[DR2_User].[dbo].[TB_CharacterBasic] -> Character info
[DR2_User].[dbo].[TB_CharacterSub] -> Character info
[DR2_User].[dbo].[TB_UserItem] -> Item info (edit here)
[DR2_Def].[dbo].[TB_DefItem] -> Item database (do not edit)
about the cash shop, I will consider writing a guide about it, when I have free time ofc