For ticket-selling businesses, nothing beats “sold out”. But whether or not a flight sells all of its tickets, or a sports team fills their stadium, the show must go on. Businesses with perishable inventory stand to gain the most from the daily deals model, and those that can make money on complementary goods (creating purchases that make up for revenues lost in offering the discount) can often break even — take movie theaters or sports venues, for example. This is where a company called Goldstar enters the field. Goldstar is membership-based website for half-price live entertainment tickets, that allows venues to unload their extra tickets, make some additional revenue, and generate word-of-mouth marketing.