As a Rule, a coupon discount has a size — from 20 DL 60%. This Spurns The Consumer to Buy Goods. There are Specialized Resources that Sell and Distribute Coupons. For Example, . They Place Offers on Goods and Services. This type of service Distributes Well -known Varieties of Coupens. Discount CouPONS are certificates that sent to the buyer to e -mail Immediatly after Purchase. NEXT, The Owner Must Print them On the Printer. Size, As a Rule, does not Expeded A4 Format. All Certificates Have their Own Unified Numbers that Known Only to Companies and Consumers who Goods Order a Service. In Addition, Discount CouPons Can Be Codes. They Are Usoally Sent to Consumers by sms or by e-mail.