REMOVE kaal sarpa dosha yourself!

It is found that people challenged by Kala Sarpa Yoga, if become aware of it in time and work hard then this yoga transforms them into confident, industrious, hardworking, capable of performing extra ordinarily well and rise to top positions in their life, if other favourable yogas are also present.So in my opinion it’s a waste to trash your money on costly remedies, instead you should try to rectify this dosha yourself without much effort and investment. Even if you don’t suffer from such dosha, the remedies will never harm you, instead they would strengthen your karmic destiny.

The Best solution is to recite Om Namaha Shivayah daily.
Worship Shivalinga decorated with a snake made of Copper daily.
Perform abisheka to Shivalinga daily with water and offer flower and sandal paste for atleast five years and recite Rudrashtaka.

Just remember and chant the holy names of the God YOU worship and sincerely offer regular prayers the way a dedicated believer must perform.  You may place a big & impressive picture of HIM or any holy place of worship you trust. Apart from reciting the names of the God, here are some more tips.
For Christians: a picture of Christ wearing a golden crown is adviced not the one on cross showing pain remember the photo must be clear and sharp.
        

Wash away a pair of snakes made of Iron or Bronze in a river.
Offer coal to any holy river on three occasions during any auspicious time.
Start eating your meals sitting in your kitchen only.

Feed birds and free caged birds for 40 days.
Get a ring made up of silver or eight metals made and wear it in your middle finger.
Use blue handkerchief, blue watchstrap and blue pen. Recite Nav Nag stotra daily for one year.
Wear Lapiz Lazuli or Lajavrata in a silver amulet according to the age and weight of the native.