There are so many factors in pricing though,eot will always be on the cheap side someone who owns and has paid for decent carpet circa £80 a sq m will think that charging 30p per sq foot is cheap,if you weigh up what it would cost to replace it,and how much use they will get out of it through cleaning,it's a bargain....I have booked a small lounge,of a reg customer,it's white,high wool content,and has quite a few spots and marks on it,prob about 16x 14 charging them £100 plus another £150 for the sofa.
They have a carpet in their dining room,that was hand knotted in India ,I have never seen a carpet like it it's so thick cost them thousands