steam sales.

code/modules/vending/_vending.dm

@@ -575,13 +575,10 @@ GLOBAL_LIST_EMPTY(vending_products)
 		var/cost_mult = get_best_discount(C)
 		if(cost_mult != 1)
 			.["cost_mult"] = cost_mult
-			switch(cost_mult)
-				if(0)
-					.["cost_text"] = "FREE"
-				if(0 to 1)
-					.["cost_text"] = " [(1 - cost_mult) * 100]% OFF"
-				if(1 to INFINITY)
-					.["cost_text"] = " [(cost_mult - 1) * 100]% EXTRA"
+			if(cost < 1)
+				.["cost_text"] = " [(1 - cost_mult) * 100]% OFF"
+			else
+				.["cost_text"] = " [(cost_mult - 1) * 100]% EXTRA"
 	.["stock"] = list()
 	for (var/datum/data/vending_product/R in product_records + coin_records + hidden_records)
 		.["stock"][R.name] = R.amount

tgui-next/packages/tgui/interfaces/Vending.js

@@ -47,6 +47,7 @@ export const Vending = props => {
       <Section title="Products" >
         <Table>
           {inventory.map((product => {
+            const suffix = ' cr' + data.cost_text;
             return (
               <Table.Row key={product.name}>
                 <Table.Cell>
@@ -97,9 +98,10 @@ export const Vending = props => {
                           )
                         )
                       )}
-                      content={(data.cost_mult !== 0
-                        ? Math.round(product.price * data.cost_mult) + ' cr'
-                        : '') + data.cost_text}
+                      content={(data.onstation
+                        && product.price !== 0)
+                        ? Math.round(product.price * data.cost_mult) + suffix
+                        : 'FREE'}
                       onClick={() => act(ref, 'vend', {
                         'ref': product.ref,
                       })} />