There is a big difference between a newly laid floor and a floor that has been in decades, it is oak with very liquid smoke or pine which can be very soft and sensitive to scratches.
How much does a polished concrete floor cost?
Stained concrete. - Great for a basement or smooth garage floor. So many options are out there now.
Colorful unfinished basement idea
polished concrete floor - costs
Polished Concrete Melbourne | Geocrete
Polished Concrete Floors Cost
How Much Did it Cost to Install Your Polished Concrete Floor? — Reader Intelligence Request | Apartment Therapy
Polished Concrete Floors - Polishing Concrete with Husqvarna HiPERFLOOR®