Discount Coupons. Coupons are not valid with any other offers. Coupons must be used at the time of checkout and are not retro active to previous purchases.
Using online coupon codes or promo links when shopping online can be similar to utilizing paper coupons or shopping the sales at local stores. But unlike paper coupons that you hand to a cashier to redeem, online stores have a code to enter during checkout that relates to a specific discount and that amount is subtracted from the total purchase.
Express Codes. A payer (shipper or a broker) that has an account with COMDATA, issues COMCHEKs to drivers for services rendered or as a fuel advance and they do so in a form of an Express Code for a predetermined amount. The Express Codes vary in length, usually from 14 to 18 digits in length, but will always be just numbers not letters.