mpo_paiza_deal_grade_effect

mpo_paiza_deal_grade_effect = {
	if = {
		limit = {
			has_character_flag = established_paiza_system
		}
		set_variable = {
			name = trade_gold_value
			value = {
				value = scope:paiza_merchant.var:paiza_gold_invested
				multiply = 0.4
			}
		}
	}
	else = {
		set_variable = {
			name = trade_gold_value
			value = {
				value = scope:paiza_merchant.var:paiza_gold_invested
				multiply = 0.2
			}
		}
	}

	set_variable = {
		name = trade_gold_percent
		value = 1
	}
	change_variable = {
		name = trade_gold_percent
		add = {
			add = scope:paiza_merchant.sum_of_all_skills_value
			multiply = 0.01
			max = 4
			min = 0
		}
	}
	#custom_tooltip = paiza_merchant_skill_gold_percent
	domicile ?= {
		switch = {
			trigger = has_domicile_parameter
			nomad_yurt_paiza_more_gold_lvl_1 = {
				custom_tooltip = paiza_yurt_gold_percent_1
				root = {
					change_variable = {
						name = trade_gold_percent
						add = 0.05
					}
				}
			}
			nomad_yurt_paiza_more_gold_lvl_2 = {
				custom_tooltip = paiza_yurt_gold_percent_2
				root = {
					change_variable = {
						name = trade_gold_percent
						add = 0.1
					}
				}
			}
			nomad_yurt_paiza_more_gold_lvl_3 = {
				custom_tooltip = paiza_yurt_gold_percent_3
				root = {
					change_variable = {
						name = trade_gold_percent
						add = 0.2
					}
				}
			}
		}
	}
	change_variable = {
		name = trade_gold_value
		multiply = root.var:trade_gold_percent
	}
}

As written in game/common/scripted_effects/09_dlc_mpo_scripted_effects.txt.