Mate is re-vamping a living room. Size is approx 30 x 15ft - fairly typical through lounge in a modern house.
Concrete floor.
He wants a solid real oak floor. And matching skirting boards and architraves. And the window sill round the front curved window - which will be about 1ft deep.
Says - without having got any quotes - he can have it done for about 2 grand. Which seems very low to me.
About 5 years ago I did mine myself. Admittedly a bigger room, but it cost me a grand for decent engineered oak flooring - T&G plywood with a thick oak surface. And no skirting boards, etc. Or labour.
A quick look shows real oak at something like 50 quid a sq metre - and in random lengths from about 400-1200mm. I'd be looking for rather longer than 1200mm to avoid it looking like offcuts. ;-)