diff --git a/README.md b/README.md
index 3c1be44..422d237 100644
--- a/README.md
+++ b/README.md
@@ -41,21 +41,21 @@ Actual price of a full build may be higher.
 
 |                Part                 | Qty | Cost (USD) |
 |-------------------------------------|-----|------------|
-| M4 hex bolt 40mm                    | 4   | 5.0        |
-| M3 sliding t slot nut               | 25  | 1.5        |
-| M3 hex cap bolt 8mm                 | 25  | 2.25       |
+| M4 hex bolt 40mm                    | 4   | 2.4        |
+| M3 sliding t slot nut               | 25  | 1.25       |
+| M3 hex cap bolt 8mm                 | 25  | 2.0        |
 | M3 hex cap bolt 6mm                 | 8   | 0.56       |
-| M3 hex cap bolt 12mm                | 1   | 0.0        |
-| L298N Motor driver module           | 1   | 2.89       |
+| M3 hex cap bolt 12mm                | 1   | 0.08       |
+| L298N Motor driver module           | 1   | 2.87       |
 | ESP32 GPIO breakout board           | 1   | 5.99       |
 | ESP32 Dev board                     | 1   | 6.66       |
+| 608-RS Ball Bearing                 | 1   | 0.17       |
 | 250RPM DC geared motor              | 2   | 29.98      |
-| 2020 Aluminum extrusion 420mm       | 2   | 5.22       |
-| 2020 Aluminum extrusion 260mm       | 4   | 6.44       |
-| 100RPM DC geared motor with encoder | 1   | 17.02      |
+| 2020 Aluminum extrusion 420mm       | 2   | 5.1        |
+| 2020 Aluminum extrusion 260mm       | 4   | 6.4        |
+| 100RPM DC geared motor with encoder | 1   | 16.19      |
 |---------|---------------|------------------------------------|
-| TOTAL   | 75            | 83.51                              |
-
+| TOTAL   | 76            | 79.65                              |
 
 
 <!-- /bom -->
diff --git a/hardware/contact_printer_BOM_total.csv b/hardware/contact_printer_BOM_total.csv
index dd1e387..3e32dbf 100644
--- a/hardware/contact_printer_BOM_total.csv
+++ b/hardware/contact_printer_BOM_total.csv
@@ -3,7 +3,7 @@ quantity,part,part_id,price
 25,"M3 sliding t slot nut",N/A,125
 25,"M3 hex cap bolt 8mm",N/A,200
 8,"M3 hex cap bolt 6mm",N/A,56
-1,"M3 hex cap bolt 12mm",N/A,0
+1,"M3 hex cap bolt 12mm",N/A,8
 1,"L298N Motor driver module",N/A,287
 1,"ESP32 GPIO breakout board",N/A,599
 1,"ESP32 Dev board",N/A,666
@@ -12,4 +12,4 @@ quantity,part,part_id,price
 2,"2020 Aluminum extrusion 420mm",N/A,510
 4,"2020 Aluminum extrusion 260mm",N/A,640
 1,"100RPM DC geared motor with encoder",N/A,1619
-76,TOTAL,N/A,7957
+76,TOTAL,N/A,7965
diff --git a/hardware/prices.csv b/hardware/prices.csv
index 6575899..38d2861 100644
--- a/hardware/prices.csv
+++ b/hardware/prices.csv
@@ -2,6 +2,7 @@ part,part_id,price,quantity,url
 M3 hex nut,N/A,999,300,https://amzn.to/4hAnwjc
 M3 hex cap bolt 6mm,N/A,726,100,https://amzn.to/3AwiZxo
 M3 hex cap bolt 8mm,N/A,899,100,https://amzn.to/3YEvWNB
+M3 hex cap bolt 12mm,N/A,836,100,https://amzn.to/48CGa5Y
 M3 sliding t slot nut,N/A,599,105,https://amzn.to/48GRrSU
 2020 Aluminum extrusion 260mm,N/A,7399,46,https://amzn.to/418OicC
 2020 Aluminum extrusion 420mm,N/A,7399,29,https://amzn.to/418OicC
diff --git a/scripts/bom.sh b/scripts/bom.sh
index aa746ba..a5a3425 100644
--- a/scripts/bom.sh
+++ b/scripts/bom.sh
@@ -61,4 +61,12 @@ sqlite3 :memory: -cmd '.mode csv' -cmd ".import ${TOTAL} bom" -cmd '.mode markdo
   "SELECT 'TOTAL', SUM(quantity), CAST(SUM(price) / 100.00 as MONEY) FROM bom;" | grep -v 'SUM('
 
 sqlite3 :memory: -cmd '.mode csv' -cmd ".import ${TOTAL} bom"\
-  "SELECT SUM(quantity), 'TOTAL', 'N/A', SUM(price) FROM bom;" | tr -d '"' >> "${TOTAL}"
\ No newline at end of file
+  "SELECT SUM(quantity), 'TOTAL', 'N/A', SUM(price) FROM bom;" | tr -d '"' >> "${TOTAL}"
+
+NONEFOUND=$(sqlite3 :memory: -cmd '.mode csv' -cmd ".import ${DESTINATION} bom" -cmd ".import ${PRICES} prices" -cmd '.mode column' -cmd '.headers off' \
+  'SELECT DISTINCT part FROM bom WHERE part NOT IN (SELECT part FROM prices) ORDER BY part;')
+
+if [[ "${NONEFOUND}" != "" ]]; then
+  echo "No price found for the following parts:"
+  echo "${NONEFOUND}"
+fi
\ No newline at end of file