Used the xmas special (mara 30 for 1 cent) to test. Wasn't sure but placed an order for 70$ and 3 minutes later their mule char was ready. Also the automatic mule helper is a very good idea.
Props to this guys!
Here are some Coupons from my Orders. They are valid until 30 Dec. - 1/2/3 Jan. The one Coupon I used was 15% but I dont know if the others have the same worth. Try it.:)
When the coupons aren't valid any longer try "killbaal" for 10% Discount.