Bought in the USA for $54 
Brand new with tags Heather Grape Shake trousers from Liz Claiborne. Zip and two button fastening, belt loops, pockets on side and back. 64% polyester, 34% rayon, 2% spandex.  As 18P is a USA size please go by the measurements below

Approx measurments waist 38" inside leg 24"