2016 HOME STUDENT EUROPEAN: 32$
WINDOWS 8.1 PRO STORE: 10$
WINDOWS 10 PRO STORE: 14$
....
All keys are retail, not cracked, so the keys are registered under the client's email account.
Skype: hoangbaobin

PS: remember " YOU GET WHAT YOU PAY FOR" so NEVER compare to the other sellers for their cheaper price.
Contact me for Pidcheck and Screenshots prior to the purchase.