Thank you all for the sweet comments. I did the drawing through random.org and here are the winning numbers (comments)
4, 14, 15, 8, 17
So congratulations to AJ, Eni, LaLuna, Harlequin and mayasa!
Could you please leave me your e-mail address in the comments or e-mail it to me at firstname.lastname@example.org and I'll send you the coupon code.
Thank you all so much for playing. I'll have more of these drawing in the future :)