Prices are starting at and differ for plus sizes.  The 1x- 3x is $97, on sale for $67.90.
Waist is measured from side seam to side seam across the front across the elastic band ( double to get the circumference), and then it measured across while the waist band is stretched out ( double to get the circumference).  The hips are measured from side seam to side seam across the front at the widest point.  The length is measured from the waist band down to the hem.  The inseam is measured from the crotch seam straight down to the hem.
 
Small: waist is 12" (24" around) and will stretch to 19" (38" around), hips are 23.5" (47" around), length is 32", inseam is 21.5" 
 Medium:  waist is 13" (26" around) and will stretch to 20" (40" around), hips are 23.5" (47" around), length is 32" , inseam is 21.5"
Large: waist is 14" (28" around) and will stretch to 22" (44" around), hips are 25" (50" around), length is 33" , inseam is 22"
X-Large: waist is 16" (32" around) and will stretch to 25" (50" around), hips are 26.5" (53" around), length is 34", inseam is 22"
1X:  waist is 18" (34" around) and will stretch to 26" (52" around), hips are 28.5" (57" around), length is 34", inseam is 22.5"
2X:  waist is 20" (40" around) and will stretch to 28.5" (57" around), hips are 30" (60" around), length is 34.5", inseam is 22.5"
3X:  waist is 22.5" (45" around) and will stretch to 30" (60" around), hips are 32" (54" around), length is 36", inseam is 22.5"