The Romans, while brilliant architects and masters of the practical arts, weren't terribly original in their plays, especially with the comedies. Roman Comedies were basically simple adaptations of New Greek Comedies -- changing the names and geographic references. The Pot of Gold is a direct adaptation of Dyskolos by Menander. Both feature the same sorts of stock characters - the grumpy old man, the wily servant, young lovers, etc. Both feature domestic subject matter and bawdy/physical humor. Plautus, however, adds his signature puns and comic language (lots of terrific alliteration).