I include a coupon with a coupon code that can be used within a 1-3 month period. My coupons are 15% to 20% off. Some customers use them. For the most part, my repeat customers don't use them. But, I always receive thanks for including them in their orders. I used to place extra tags and gifts in my packages, but I never received as much thanks I do, now, with the enclosed coupons. I also write "Thank you," and sign my name on the order invoice. My 2 cents! Take care and many sales to all of us!