diff --git a/Resources/Config/descriptions.plist b/Resources/Config/descriptions.plist
index d19cfdf49..686b64a5b 100644
--- a/Resources/Config/descriptions.plist
+++ b/Resources/Config/descriptions.plist
@@ -1656,9 +1656,12 @@
 	"equip-cash-value"				= "Cash: [credits|dcr].";
 	"equip-no-equipment-available-for-purchase" = "No equipment available for purchase.";
 	"equip-repair-@"				= " Repair:%@";
+	"equip-sell-@"					= " Sell:%@";
+	"upgradeinfo-@-price-is-for-refunding" = "%@ (Price will be refunded for the existing system).";
 	"upgradeinfo-@-price-is-for-repairing" = "%@ (Price is for repairing the existing system).";
 	"@-will-replace-other-energy"	="%@ (The installed energy recharge unit will be removed and sold for scrap).";
 	"upgradeinfo-@-weight-d-of-equipment" = "%@\nTakes up %dt of cargo space.";
+	"upgradeinfo-@-frees-weight-d-of-equipment" = "%@\nFrees up %dt of cargo space.";
 	"forward-facing-string"			= " Forward ";
 	"aft-facing-string"				= " Aft ";
 	"port-facing-string"			= " Port ";
diff --git a/src/Core/Entities/PlayerEntity.h b/src/Core/Entities/PlayerEntity.h
index 8d96c5e33..5dbbd8366 100644
--- a/src/Core/Entities/PlayerEntity.h
+++ b/src/Core/Entities/PlayerEntity.h
@@ -1033,6 +1033,9 @@ typedef enum
 
 - (OOSpeechSettings) isSpeechOn;
 
+- (BOOL) isEquipmentSellOption:(NSString *)equipmentKey;
+- (BOOL) canAddEquipmentSellOption:(NSString *)equipmentKey;
+
 - (void) addEquipmentFromCollection:(id)equipment;	// equipment may be an array, a set, a dictionary whose values are all YES, or a string.
  
 - (void) getFined;
diff --git a/src/Core/Entities/PlayerEntity.m b/src/Core/Entities/PlayerEntity.m
index dfb3acfd3..bb35d4481 100644
--- a/src/Core/Entities/PlayerEntity.m
+++ b/src/Core/Entities/PlayerEntity.m
@@ -8803,6 +8803,18 @@ - (void) setGuiToEquipShipScreen:(int)skipParam selectingFacingFor:(NSString *)e
 
 				}
 				
+				// is this item a sell option?
+				if ([self isEquipmentSellOption:eqKey])
+				{
+					//desc = [NSString stringWithFormat:DESC(@"equip-sell-@"), desc]; //Uncomment to add "equip sell" string ("Sell: ") at the beginning to the entry.
+					if (installTime == 0)
+					{
+						installTime = 600 + price;
+					}
+					[gui setColor:[gui colorFromSetting:kGuiEquipmentSellColor defaultValue:[OOColor orangeColor]] forRow:row];
+
+				}
+				
 				NSString *timeString = [UNIVERSE shortTimeDescription:installTime];
 				NSString *priceString = [NSString stringWithFormat:@" %@ ", OOCredits(price)];
 
@@ -8990,7 +9002,13 @@ - (void) showInformationForSelectedUpgradeWithFormatString:(NSString *)formatStr
 			{
 				if([eqKey hasSuffix:@"ENERGY_UNIT"] && ([self hasEquipmentItem:@"EQ_ENERGY_UNIT_DAMAGED"] || [self hasEquipmentItem:@"EQ_ENERGY_UNIT"] || [self hasEquipmentItem:@"EQ_NAVAL_ENERGY_UNIT_DAMAGED"]))
 					desc = [NSString stringWithFormat:DESC(@"@-will-replace-other-energy"), desc];
-				if (weight > 0) desc = [NSString stringWithFormat:DESC(@"upgradeinfo-@-weight-d-of-equipment"), desc, weight];
+				
+				// In case the menu entry is for selling items:
+				if ([self isEquipmentSellOption:eqKey]) {
+					//desc = [NSString stringWithFormat:DESC(@"upgradeinfo-@-price-is-for-refunding"), desc]; //Uncomment to enable "price is for refunding" infotext at the end of the description text.
+					if (weight > 0) desc = [NSString stringWithFormat:DESC(@"upgradeinfo-@-frees-weight-d-of-equipment"), desc, weight];
+				}
+				else if (weight > 0) desc = [NSString stringWithFormat:DESC(@"upgradeinfo-@-weight-d-of-equipment"), desc, weight];
 			}
 			if (formatString) desc = [NSString stringWithFormat:formatString, desc];
 			[gui addLongText:desc startingAtRow:GUI_ROW_EQUIPMENT_DETAIL align:GUI_ALIGN_LEFT];
@@ -9713,7 +9731,7 @@ - (BOOL) tryBuyingItem:(NSString *)eqKey
 	
 	price *= priceFactor;  // increased prices at some stations
 	
-	if (price > credits)
+	if (price > credits && ![self isEquipmentSellOption:eqKey])
 	{
 		return NO;
 	}
@@ -9913,6 +9931,10 @@ - (BOOL) tryBuyingItem:(NSString *)eqKey
 	
 	if ([self canAddEquipment:eqKey inContext:@"purchase"])
 	{
+		if ([self isEquipmentSellOption:eqKey]) {
+			credits += price;
+			return YES;
+		}
 		credits -= price;
 		[self addEquipmentItem:eqKey withValidation:NO inContext:@"purchase"]; // no need to validate twice.
 		if (isRepair)
@@ -10863,6 +10885,19 @@ - (BOOL) canAddEquipment:(NSString *)equipmentKey inContext:(NSString *)context
 	return YES;
 }
 
+- (BOOL) isEquipmentSellOption:(NSString *)equipmentKey
+{
+	return [equipmentKey hasSuffix:@"_SELL"];
+}
+
+- (BOOL) canAddEquipmentSellOption:(NSString *)equipmentKey
+{
+	if ([equipmentKey hasSuffix:@"_SELL"]) {
+		equipmentKey = [equipmentKey substringToIndex:[equipmentKey length] - [@"_SELL" length]];
+		return [self hasEquipmentItem:equipmentKey];
+	}
+	return false;
+}
 
 - (BOOL) addEquipmentItem:(NSString *)equipmentKey inContext:(NSString *)context
 {
diff --git a/src/Core/Entities/ShipEntity.m b/src/Core/Entities/ShipEntity.m
index 25facaa44..9cb31fe2a 100644
--- a/src/Core/Entities/ShipEntity.m
+++ b/src/Core/Entities/ShipEntity.m
@@ -3403,7 +3403,6 @@ - (BOOL) equipmentValidToAdd:(NSString *)equipmentKey whileLoading:(BOOL)loading
 	// while loading, we mainly need to catch changes when the installed oxps set has changed since saving. 
 	if ([eqType requiresEmptyPylon] && [self missileCount] >= [self missileCapacity] && !loading)  return NO;
 	if ([eqType  requiresMountedPylon] && [self missileCount] == 0 && !loading)  return NO;
-	if ([self availableCargoSpace] < [eqType requiredCargoSpace] && !validationForDamagedEquipment && !loading)  return NO;
 	if ([eqType requiresEquipment] != nil && ![self hasAllEquipment:[eqType requiresEquipment] includeWeapons:YES whileLoading:loading])  return NO;
 	if ([eqType requiresAnyEquipment] != nil && ![self hasEquipmentItem:[eqType requiresAnyEquipment] includeWeapons:YES whileLoading:loading])  return NO;
 	if ([eqType incompatibleEquipment] != nil && [self hasEquipmentItem:[eqType incompatibleEquipment] includeWeapons:YES whileLoading:loading])  return NO;
@@ -3412,6 +3411,11 @@ - (BOOL) equipmentValidToAdd:(NSString *)equipmentKey whileLoading:(BOOL)loading
 	if ([eqType requiresFreePassengerBerth] && [self passengerCount] >= [self passengerCapacity])  return NO;
 	if ([eqType requiresFullFuel] && [self fuel] < [self fuelCapacity] && !loading)  return NO;
 	if ([eqType requiresNonFullFuel] && [self fuel] >= [self fuelCapacity] && !loading)  return NO;
+	
+	// if the "equipment" is only a standin for a sell option, the weight isn't accually subtracted as it won't be added to the ship. 
+	if (![equipmentKey hasSuffix:@"_SELL"]) {
+		if ([self availableCargoSpace] < [eqType requiredCargoSpace] && !validationForDamagedEquipment && !loading)  return NO;
+	}
 
 	if (!loading)
 	{
diff --git a/src/Core/GuiDisplayGen.h b/src/Core/GuiDisplayGen.h
index abb4aa522..8d5181458 100644
--- a/src/Core/GuiDisplayGen.h
+++ b/src/Core/GuiDisplayGen.h
@@ -75,6 +75,7 @@ static NSString * const kGuiEquipmentUnavailableColor	= @"equipment_unavailable_
 static NSString * const kGuiEquipmentScrollColor	= @"equipment_scroll_color";
 static NSString * const kGuiEquipmentOptionColor	= @"equipment_option_color";
 static NSString * const kGuiEquipmentRepairColor	= @"equipment_repair_color";
+static NSString * const kGuiEquipmentSellColor		= @"equipment_sell_color";
 static NSString * const kGuiEquipmentDescriptionColor	= @"equipment_description_color";
 static NSString * const kGuiEquipmentLaserColor		= @"equipment_laser_color";
 static NSString * const kGuiEquipmentLaserFittedColor	= @"equipment_laser_fitted_color";