diff --git a/code/__DEFINES/research.dm b/code/__DEFINES/research.dm
index c78b4938621..96a2c74ef8b 100644
--- a/code/__DEFINES/research.dm
+++ b/code/__DEFINES/research.dm
@@ -79,6 +79,7 @@
 #define SCIENTIFIC_COOPERATION_PURCHASE_MULTIPLIER 0.01
 /// How much money is one point of gain worth.
 #define SCIPAPER_GAIN_TO_MONEY 125
+#define SCIPAPER_ALREADY_BOUGHT 2
 
 ///Connects the 'server_var' to a valid research server on your Z level.
 ///Used for machines in LateInitialize, to ensure that RND servers are loaded first.
diff --git a/code/modules/modular_computers/file_system/programs/frontier.dm b/code/modules/modular_computers/file_system/programs/frontier.dm
index 9df0e2d9160..34bcbca8027 100644
--- a/code/modules/modular_computers/file_system/programs/frontier.dm
+++ b/code/modules/modular_computers/file_system/programs/frontier.dm
@@ -155,7 +155,8 @@
 					else
 						data["relations"][partner.type] = "Undefined"
 				data["purchaseableBoosts"][partner.type] = list()
-				for(var/node_id in linked_techweb.get_available_nodes())
+				var/displayable_nodes = linked_techweb.get_available_nodes() + linked_techweb.get_researched_nodes()
+				for(var/node_id in displayable_nodes)
 					// Not from our partner
 					if(!(node_id in partner.boostable_nodes))
 						continue
@@ -218,8 +219,9 @@
 			var/datum/scientific_partner/partner = locate(text2path(params["boost_seller"])) in SSresearch.scientific_partners
 			var/datum/techweb_node/node = SSresearch.techweb_node_by_id(params["purchased_boost"])
 			if(partner && node)
-				if(partner.purchase_boost(linked_techweb, node))
-					computer.say("Purchase successful.")
+				var/possible_boost = partner.purchase_boost(linked_techweb, node)
+				if(possible_boost)
+					computer.say("Purchase successful[possible_boost == SCIPAPER_ALREADY_BOUGHT ? ", refunding [partner.boostable_nodes[params["purchased_boost"]]] points" : ""].")
 					playsound(computer, 'sound/machines/ping.ogg', 25)
 					return TRUE
 			playsound(computer, 'sound/machines/terminal/terminal_error.ogg', 25)
diff --git a/code/modules/research/ordnance/_scipaper.dm b/code/modules/research/ordnance/_scipaper.dm
index 7d3ea79b332..0b5efc03e10 100644
--- a/code/modules/research/ordnance/_scipaper.dm
+++ b/code/modules/research/ordnance/_scipaper.dm
@@ -290,17 +290,23 @@
 	var/list/boostable_nodes = list()
 
 /datum/scientific_partner/proc/purchase_boost(datum/techweb/purchasing_techweb, datum/techweb_node/node)
-	if(!allowed_to_boost(purchasing_techweb, node.id))
+	var/possible_boost = allowed_to_boost(purchasing_techweb, node.id)
+	if(!possible_boost)
 		return FALSE
 	purchasing_techweb.boost_techweb_node(node, list(TECHWEB_POINT_TYPE_GENERIC = boostable_nodes[node.id]))
 	purchasing_techweb.scientific_cooperation[type] -= boostable_nodes[node.id] * SCIENTIFIC_COOPERATION_PURCHASE_MULTIPLIER
+	if(possible_boost == SCIPAPER_ALREADY_BOUGHT) /// Refund the original price
+		purchasing_techweb.add_point_list(list(TECHWEB_POINT_TYPE_GENERIC = boostable_nodes[node.id]))
+		return SCIPAPER_ALREADY_BOUGHT
 	return TRUE
 
 /datum/scientific_partner/proc/allowed_to_boost(datum/techweb/purchasing_techweb, node_id)
 	if(purchasing_techweb.scientific_cooperation[type] < (boostable_nodes[node_id] * SCIENTIFIC_COOPERATION_PURCHASE_MULTIPLIER)) // Too expensive
 		return FALSE
-	if(!(node_id in purchasing_techweb.get_available_nodes())) // Not currently available
-		return FALSE
 	if((TECHWEB_POINT_TYPE_GENERIC in purchasing_techweb.boosted_nodes[node_id]) && (purchasing_techweb.boosted_nodes[node_id][TECHWEB_POINT_TYPE_GENERIC] >= boostable_nodes[node_id])) // Already bought or we have a bigger discount
 		return FALSE
+	if(node_id in purchasing_techweb.researched_nodes)
+		return SCIPAPER_ALREADY_BOUGHT
+	if(!(node_id in purchasing_techweb.get_available_nodes())) // Not currently available
+		return FALSE
 	return TRUE
diff --git a/code/modules/research/ordnance/scipaper_partner.dm b/code/modules/research/ordnance/scipaper_partner.dm
index 5bbe3e7d627..39d1cc68ed4 100644
--- a/code/modules/research/ordnance/scipaper_partner.dm
+++ b/code/modules/research/ordnance/scipaper_partner.dm
@@ -54,7 +54,7 @@
 		TECHWEB_NODE_CYBER_ORGANS = TECHWEB_TIER_2_POINTS,
 		TECHWEB_NODE_CYBER_ORGANS_UPGRADED = TECHWEB_TIER_3_POINTS,
 		TECHWEB_NODE_MEDBAY_EQUIP_ADV = TECHWEB_TIER_3_POINTS,
-		TECHWEB_NODE_CYTOLOGY = TECHWEB_TIER_3_POINTS,
+		TECHWEB_NODE_CYTOLOGY = TECHWEB_TIER_2_POINTS,
 		TECHWEB_NODE_BORG_MEDICAL = TECHWEB_TIER_3_POINTS,
 		TECHWEB_NODE_COMBAT_IMPLANTS = TECHWEB_TIER_4_POINTS,
 	)
diff --git a/code/modules/research/techweb/_techweb_node.dm b/code/modules/research/techweb/_techweb_node.dm
index 2a6eb8b7b7d..104e475b7e5 100644
--- a/code/modules/research/techweb/_techweb_node.dm
+++ b/code/modules/research/techweb/_techweb_node.dm
@@ -92,7 +92,7 @@
 			if(host.completed_experiments[experiment_type]) //do we have this discount_experiment unlocked?
 				actual_costs[cost_type] -= discount_experiments[experiment_type]
 
-	if(host.boosted_nodes[id]) // Boosts should be subservient to experiments. Discount from boosts are capped when costs fall below 250.
+	if(host.boosted_nodes[id]) // Boosts should be subservient to experiments.
 		var/list/boostlist = host.boosted_nodes[id]
 		for(var/booster in boostlist)
 			if(actual_costs[booster])