How long do real human hair clip-in extensions last?

Anyone know anything about extensions?

• i found my dream hair: http://tinypic.com/view.php?pic=6fqqrk&s=4 only problem is, my mom wont let me dye my hair unnatural colors. but i dont think shed have a problem with extensions. so i found these: http://www.sallybeauty.com/clipin-hair-extensions/EURNXT1,default,pd.html?cgid=Hair16-03 so question 1: are those extensions any good? question 2: how would i get the extensions in the right place? dont clip-ins go in like the middle, not the bottom? my hair is already that blonde color; so i'd just be getting the extenions and dying some pink and some black.

• Answer:

  yes. those are good. i get my extentions at sallys and they last me about 5 months, and i curl them everyday, you can put them anywhere in your hair., when i wear my hair down, i put them low, when i wear my hair in a pny tail, i put them at the veryy top and they can be anywhere in bettwen. get them and just experiment with them! they are amazing, and that hair, is VERY cute. I also color my extentions and they still last a long time. i love it :)