A new countertop will cost you between $50 and $100 per square foot. If you have a countertop that is 27 ft.² your cost for a countertop would range anywhere from $1350 up to $2722. new countertop will cost you between $50 and $100 per square foot. If you have a countertop that is 27 ft.² your cost for a countertop would range anywhere from $1350 up to $2722.