I would recommend getting a 130 width skin at least- Since these specific skins only go up to a 115 look for another skin. You don't need a women's specific skin, as the only difference is the patterning. Look for the regular G3 alpinist or expedition skins in a 130 (you will trim them down to match your ski) or better yet get a 140 in a BD skin. Either will work fine though.

The tail and nose pieces do not remove. You need to buy these according length ( X short, short, medium long etc...) and width ( 100 mm, 115 mm ...). The tail clip is long with a lot of adjustment to stretch to end of tail. Here is the link for sizing: http://www.genuineguidegear.com/gear/skins/alpinist-elle-skins

Has DakkaGuru ever used these skins? From his/her bio I see he is a snowboarder so probably has no business answering questions related to ski skins. Please what a sham.

The fact that the tips are self-aligning and reduce fumbling with gloves or worse, bare hands in potentially cold wind trying to get your skins straight before you drop in and the fact that they're a moving part and probably cost more to produce are where the extra money comes from. The same reason a Coke is more expensive at a gas station than it is in a grocery store- convenience. Do you like run on sentences? I do.