diff --git a/startup.lua b/startup.lua
index 0049984..db31865 100644
--- a/startup.lua
+++ b/startup.lua
@@ -2,6 +2,8 @@ local db = require("remotedb")
 local completion = require("cc.completion")
 local total_items = {}
 local monitor = peripheral.find("monitor")
+local price_map = {}
+local unit_name = nil
 term.clear()
 local x,y = term.getSize()
 term.setCursorPos(1,y)
@@ -42,6 +44,7 @@ local function input()
                             end
                         end
                         total_items[added_item_name] = (total_items[added_item_name] or 0 ) + added_item_count
+                        price_map[added_item_name] = db.getPrice(added_item_name)
                     end
                 end
             elseif event[2] == keys.l then
@@ -88,9 +91,10 @@ local function input()
                 sleep(0)
                 term.setCursorPos(1,y)
                 term.write("unit name > ")
-                local unit_name = read()
-                if unit_name ~= "" then
-                    db.setCurrencyUnit(unit_name)
+                local unit_namel = read()
+                if unit_namel ~= "" then
+                    db.setCurrencyUnit(unit_namel)
+                    unit_name = unit_namel
                     print("set currency unit")
                 end
             elseif event[2] == keys.c then
@@ -125,6 +129,9 @@ local function render_monitor()
     while true do
         sleep(0)
         if monitor then
+            if not unit_name then
+                unit_name = db.getCurrencyUnit()
+            end
             monitor.clear()
             local x,y = monitor.getSize()
             monitor.setCursorPos(1,1)
@@ -133,7 +140,7 @@ local function render_monitor()
                 monitor.setCursorPos(1,y)
                 monitor.write(tostring(k).." x"..tostring(v).."")
                 monitor.scroll(1)
-                total = total + (( db.getPrice(k) or 0)*v)
+                total = total + (( price_map[k] or 0)*v)
             end
             monitor.setCursorPos(1,y)
             monitor.write("total: "..tostring(total).." "..tostring(db.getCurrencyUnit()))
@@ -142,7 +149,6 @@ local function render_monitor()
 end
 local loops = {input,render_monitor}
 if db.loop then loops[#loops+1] = db.loop end
-if db.loops then loops = {table.unpack(loops),table.unpack(db.loops)} end
 for k,v in ipairs(loops) do
     ---@cast loops thread[]
     loops[k] = coroutine.create(v)