port of https://github.com/tgstation/tgstation/pull/49111 aka sales taggers, credit to ArcaneMusic

code/datums/components/pricetag.dm

@@ -0,0 +1,28 @@
+/datum/component/pricetag
+	var/datum/bank_account/owner
+	var/profit_ratio = 1
+
+/datum/component/pricetag/Initialize(_owner,_profit_ratio)
+	if(!isobj(parent))	//Has to account for both objects and sellable structures like crates.
+		return COMPONENT_INCOMPATIBLE
+	owner = _owner
+	if(_profit_ratio)
+		profit_ratio = _profit_ratio
+	RegisterSignal(parent, COMSIG_ITEM_SOLD, .proc/split_profit)
+	RegisterSignal(parent, COMSIG_STRUCTURE_UNWRAPPED, .proc/Unwrapped)
+	RegisterSignal(parent, COMSIG_ITEM_UNWRAPPED, .proc/Unwrapped)
+	RegisterSignal(parent, COMSIG_ITEM_SPLIT_PROFIT, .proc/return_ratio)
+
+/datum/component/pricetag/proc/Unwrapped()
+	qdel(src) //Once it leaves it's wrapped container, the object in question should lose it's pricetag component.
+
+/datum/component/pricetag/proc/split_profit(var/item_value)
+	var/price = item_value
+	if(price)
+		var/adjusted_value = price*(profit_ratio/100)
+		owner.adjust_money(adjusted_value)
+		owner.bank_card_talk("Sale recorded. [adjusted_value] credits added to account.")
+		return TRUE
+
+/datum/component/pricetag/proc/return_ratio()
+	return profit_ratio