diff --git a/code/controllers/subsystem/stock_market.dm b/code/controllers/subsystem/stock_market.dm
index 7c2cb71dc49..c0d85eaf85d 100644
--- a/code/controllers/subsystem/stock_market.dm
+++ b/code/controllers/subsystem/stock_market.dm
@@ -51,6 +51,7 @@ SUBSYSTEM_DEF(stock_market)
 		price_minimum = round(initial(mat.minimum_value_override) * SHEET_MATERIAL_AMOUNT)
 	var/price_maximum = round(initial(mat.value_per_unit) * SHEET_MATERIAL_AMOUNT * 3)
 	var/price_baseline = initial(mat.value_per_unit) * SHEET_MATERIAL_AMOUNT
+	var/quantity_baseline = initial(mat.tradable_base_quantity)
 
 	var/stock_quantity = materials_quantity[mat]
 
@@ -84,15 +85,15 @@ SUBSYSTEM_DEF(stock_market)
 	switch(trend)
 		if(MARKET_TREND_UPWARD)
 			price_change = ROUND_UP(gaussian(price_units * 0.1, price_baseline * 0.05)) //If we don't ceil, small numbers will get trapped at low values
-			quantity_change = -round(gaussian(stock_quantity * 0.1, stock_quantity * 0.05))
+			quantity_change = -round(gaussian(quantity_baseline * 0.05, quantity_baseline * 0.05))
 		if(MARKET_TREND_STABLE)
 			price_change = round(gaussian(0, price_baseline * 0.01))
-			quantity_change = round(gaussian(0, stock_quantity * 0.01))
+			quantity_change = round(gaussian(0, quantity_baseline * 0.01))
 		if(MARKET_TREND_DOWNWARD)
 			price_change = -ROUND_UP(gaussian(price_units * 0.1, price_baseline * 0.05))
-			quantity_change = round(gaussian(stock_quantity * 0.1, stock_quantity * 0.05))
+			quantity_change = round(gaussian(quantity_baseline * 0.05, quantity_baseline * 0.05))
 	materials_prices[mat] =  round(clamp(price_units + price_change, price_minimum, price_maximum))
-	materials_quantity[mat] = round(clamp(stock_quantity + quantity_change, 0, initial(mat.tradable_base_quantity) * 2))
+	materials_quantity[mat] = round(clamp(stock_quantity + quantity_change, 0, quantity_baseline * 2))
 
 /**
  * Market events are a way to spice up the market and make it more interesting.
diff --git a/code/modules/cargo/packs/_packs.dm b/code/modules/cargo/packs/_packs.dm
index aaeb55f2533..51ec71649dd 100644
--- a/code/modules/cargo/packs/_packs.dm
+++ b/code/modules/cargo/packs/_packs.dm
@@ -122,3 +122,16 @@
 	name = "[purchaser]'s Materials Order"
 	src.cost = cost
 	src.contains = contains
+
+/datum/supply_pack/custom/minerals/fill(obj/structure/closet/crate/C)
+	. = ..()
+	//Remove our material sheets from SSstock_market's materials_quantity equal to the quantity within the crate.
+	for(var/obj/item/stack/sheet/possible_stack as anything in contains)
+		if(!ispath(possible_stack, /obj/item/stack/sheet))
+			continue
+		if(!possible_stack.material_type)
+			continue
+		if(!SSstock_market.materials_quantity[possible_stack.material_type])
+			continue
+		SSstock_market.materials_quantity[possible_stack.material_type] -= contains[possible_stack]
+		SSstock_market.materials_prices[possible_stack.material_type] += round((SSstock_market.materials_prices[possible_stack.material_type]) * (contains[possible_stack] / (SSstock_market.materials_quantity[possible_stack.material_type] - contains[possible_stack])))