diff --git a/.vscode/settings.json b/.vscode/settings.json
index b2c0ad4..d586860 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,3 @@
 {
-  "Lua.diagnostics.disable": ["undefined-field", "deprecated", "lowercase-global"]
+  "Lua.diagnostics.disable": ["undefined-field", "deprecated", "lowercase-global", "need-check-nil"]
 }
diff --git a/src/backend.lua b/src/backend.lua
index 0ec5387..fef461a 100644
--- a/src/backend.lua
+++ b/src/backend.lua
@@ -1,6 +1,6 @@
 local kristly = require("/src/libs/kristly")
 local utils = require("/src/utils")
-local logger = require("/src/libs/logger"):new({ debugging = true })
+local logger = require("/src/logger"):new({ debugging = true })
 
 logger:info("Starting Kristify! Thanks for choosing Kristify. <3")
 logger:debug("Debugging mode is enabled!")
@@ -53,13 +53,14 @@
 end
 
 function handleTransaction(transaction)
-  if not utils.productsIncludes(products, transaction.sent_metaname) then
+  local product = utils.getProduct(products, transaction.sent_metaname)
+
+  if product == false or product == nil then
     kristly.makeTransaction(config.pkey, transaction.from, transaction.value,
       "message=Hey! The item `" .. transaction.sent_metaname .. "` is not available.")
     return
   end
 
-  local product = utils.getProduct(products, transaction.sent_metaname)
 
   if transaction.value < product.price then
     kristly.makeTransaction(config.pkey, transaction.from, transaction.value,
diff --git a/src/libs/logger.lua b/src/libs/logger.lua
deleted file mode 100644
index fc876b1..0000000
--- a/src/libs/logger.lua
+++ /dev/null
@@ -1,44 +0,0 @@
-local logger = {}
-
-function logger:new(o)
-  o = o or {} -- create object if user does not provide one
-  setmetatable(o, self)
-  self.__index = self
-  term.clear()
-  return o
-end
-
--- Inspiration by "Kingdaro"
--- Inspiration source: https://www.computercraft.info/forums2/index.php?/topic/6201-changing-colours-of-text-in-a-single-printwrite/
-local function colorPrint(...)
-  local curColor
-  for i = 1, #arg do
-    if type(arg[i]) == 'number' then
-      curColor = arg[i]
-    else
-      if curColor then term.setTextColor(curColor) end
-      write(arg[i])
-    end
-  end
-  print()
-  term.setTextColor(colors.white)
-end
-
-function logger:info(...)
-  colorPrint(colors.lightGray, "[", colors.green, "INFO", colors.lightGray, "] ", colors.white, table.unpack(arg))
-end
-
-function logger:warn(...)
-  colorPrint(colors.lightGray, "[", colors.orange, "WARN", colors.lightGray, "] ", colors.white, table.unpack(arg))
-end
-
-function logger:error(...)
-  colorPrint(colors.lightGray, "[", colors.red, "ERROR", colors.lightGray, "] ", colors.red, table.unpack(arg))
-end
-
-function logger:debug(...)
-  if self.debugging ~= true then return end
-  colorPrint(colors.lightGray, "[", colors.gray, "DEBUG", colors.lightGray, "] ", colors.gray, table.unpack(arg))
-end
-
-return logger
diff --git a/src/logger.lua b/src/logger.lua
new file mode 100644
index 0000000..fc876b1
--- /dev/null
+++ b/src/logger.lua
@@ -0,0 +1,44 @@
+local logger = {}
+
+function logger:new(o)
+  o = o or {} -- create object if user does not provide one
+  setmetatable(o, self)
+  self.__index = self
+  term.clear()
+  return o
+end
+
+-- Inspiration by "Kingdaro"
+-- Inspiration source: https://www.computercraft.info/forums2/index.php?/topic/6201-changing-colours-of-text-in-a-single-printwrite/
+local function colorPrint(...)
+  local curColor
+  for i = 1, #arg do
+    if type(arg[i]) == 'number' then
+      curColor = arg[i]
+    else
+      if curColor then term.setTextColor(curColor) end
+      write(arg[i])
+    end
+  end
+  print()
+  term.setTextColor(colors.white)
+end
+
+function logger:info(...)
+  colorPrint(colors.lightGray, "[", colors.green, "INFO", colors.lightGray, "] ", colors.white, table.unpack(arg))
+end
+
+function logger:warn(...)
+  colorPrint(colors.lightGray, "[", colors.orange, "WARN", colors.lightGray, "] ", colors.white, table.unpack(arg))
+end
+
+function logger:error(...)
+  colorPrint(colors.lightGray, "[", colors.red, "ERROR", colors.lightGray, "] ", colors.red, table.unpack(arg))
+end
+
+function logger:debug(...)
+  if self.debugging ~= true then return end
+  colorPrint(colors.lightGray, "[", colors.gray, "DEBUG", colors.lightGray, "] ", colors.gray, table.unpack(arg))
+end
+
+return logger
diff --git a/src/utils.lua b/src/utils.lua
index 4739087..3d7881a 100644
--- a/src/utils.lua
+++ b/src/utils.lua
@@ -4,16 +4,6 @@
   return ending == "" or str:sub(- #ending) == ending
 end
 
-function utils.productsIncludes(products, metaname)
-  for _, product in ipairs(products) do
-    if product.metaname == metaname then
-      return true
-    end
-  end
-
-  return false
-end
-
 function utils.getProduct(products, metaname)
   for _, product in ipairs(products) do
     if product.metaname == metaname then