“We’ll beat anyone’s advertised price, or your mattress is freeee.” Slogan of Sit-N-Sleep. Why would they ever opt to not beat someone’s advertised price and give a mattress away free(ee) instead? Am I missing something here?

“Arthur prodded the mattress nervously and then sat on it himself: in fact he had very little to be nervous about, because all mattresses grown in the swamps of Sqornshellous Zeta are very throroughly killed and dried before being put to service. Very few have ever come to life again.” –Douglas Adams/HHGTTG