I love using Grubhub to order food, I usually get discounts so it makes my orders a lot cheaper. Grubhub is available in quite a few cities, you may be missing out on this.
Sign up to GrubHub and you can get $7 off your order. Many places only require a minimum order of $15 so you are getting almost 50% off! After you sign up you will get a GrubHub coupon code valid for $7 off your order.