Cost of the standard elements:

Certainly, here’s the full list of average costs for the items based on the provided invoices, along with the units and individual quotes from each invoice:

Average Costs of Items with Units and Quotes

1. Wifi Controller (per PCS):
   • Invoice 1: $10.00
   • Invoice 2: $40.00
   • Average: $25.00
2. Meanwell Power Supply (XLG-150) (per PCS):
   • Invoice 1: $25.00
   • Invoice 2: $38.00
   • Average: $31.50
3. Meanwell Non-Waterproof Switch Power Supply (PS12V350W) (per PCS):
   • Invoice 1: $25.00
   • Average: $25.00
4. Amplifier (per PCS):
   • Invoice 1: $15.00
   • Average: $15.00
5. Waterproof Box (per PCS):
   • Invoice 1: $19.00
   • Average: $19.00
6. Extension Cable with Connector (per PCS):
   • Invoice 1: $0.80
   • Average: $0.80
7. T Connector (per PCS):
   • Invoice 1: $1.20
   • Invoice 2: $2.50
   • Invoice 3: $2.50
   • Average: $2.07
8. Y Connector (per PCS):
   • Invoice 2: $2.50
   • Invoice 3: $2.50
   • Average: $2.50
9. LED Point Light (GLMD176) (per PCS):
   • Invoice 2: $1.20
   • Invoice 3: $1.15
   • Average: $1.18
10. White Aluminum Track (per Meter):
    • Invoice 2: $2.50
    • Average: $2.50
11. Corner Cup (per PCS):
    • Invoice 3: $1.10
    • Average: $1.10

Please note that these are average costs before shipping and taxes.