Companies are using these inexpensive Incentives and Sales have been steady. Advertising can be a big profit eater for many business(es). Sometimes it can become a total loss. Increase Business Sales, one of the leaders in wholesale Travel Certificates has helped many small to mid-sizes companies receive more traffic to their Store’s and Internet Sites by selling them Travel Certificates. Travel certificates have become an increasingly popular option for all types of incentive programs: as add-ons to incentive awards, as premiums, and as corporate gifts. Companies that giveaway certificates for business purposes have experienced double-digit growth in recent years.