where to get $100 adwords voucher?

dose anybody know where i can get myself a $100 adwords voucher?
i sighned up with hostgator about 2 weeks ago and i think they had a promo, but i didnt use any coupon code and i havent seen the advert for it in my cpanel latley.

where could i get 1 from? free if its possible?

You can get them for free,but its harder.Just go to fiverr and search there.There's an indian guy,great to do business with him.