Computer or Cloud? Expenses for one month for one working place in case of buying a computer

*You can change the numbers in the boxes.
*Prices are without VAT
Initial expenses
Computer: USD. \  months = 10 USD.
Windows ОС: USD. \  months = 6 USD.
Installing: USD. \  months = 1 USD.
Installing printers, network, electronic sign: USD. \  months = 0 USD.
Monthly expenses
System administration: USD. \  months = 55 USD.
Electricity – 500W X 8H X 21 days X 0,16 BGN: USD. \  months = 20 USD.
Current expenses:
Spare parts after the guarantee period of 3 years: USD. \  months = 4 USD.
Total without VAT:  92 USD.
Total with VAT:  110.40 USD.